diff --git a/gtk2_ardour/ardour.menus.in b/gtk2_ardour/ardour.menus.in
index 459557a028..43353e17be 100644
--- a/gtk2_ardour/ardour.menus.in
+++ b/gtk2_ardour/ardour.menus.in
@@ -541,7 +541,7 @@
         <menuitem action="toggle-range-ruler"/>
         <menuitem action="toggle-loop-punch-ruler"/>
         <menuitem action="toggle-cd-marker-ruler"/>
-        <menuitem action="toggle-section-ruler"/>
+        <menuitem action="toggle-arrangement-ruler"/>
         <menuitem action="toggle-marker-ruler"/>
         <menuitem action="toggle-cue-marker-ruler"/>
         <separator/>
diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index 6fa22b200a..f0919ee80e 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -339,7 +339,7 @@ Editor::Editor ()
 	, range_mark_label (_("Range Markers"))
 	, transport_mark_label (_("Loop/Punch Ranges"))
 	, cd_mark_label (_("CD Markers"))
-	, section_mark_label (_("Sections"))
+	, section_mark_label (_("Arrangement"))
 	, cue_mark_label (_("Cue Markers"))
 	, videotl_label (_("Video Timeline"))
 	, videotl_group (0)
@@ -703,7 +703,7 @@ Editor::Editor ()
 	add_notebook_page (_("Sources"), _sources->widget ());
 	add_notebook_page (_("Regions"), _regions->widget ());
 	add_notebook_page (_("Clips"), _trigger_clip_picker);
-	add_notebook_page (_("Sections"), _sections->widget ());
+	add_notebook_page (_("Arrangement"), _sections->widget ());
 	add_notebook_page (_("Snapshots"), _snapshots->widget ());
 	add_notebook_page (_("Track & Bus Groups"), _route_groups->widget ());
 	add_notebook_page (_("Ranges & Marks"), _locations->widget ());
diff --git a/gtk2_ardour/editor_actions.cc b/gtk2_ardour/editor_actions.cc
index 47022ceb7b..7dbce7dec2 100644
--- a/gtk2_ardour/editor_actions.cc
+++ b/gtk2_ardour/editor_actions.cc
@@ -728,7 +728,7 @@ Editor::register_actions ()
 	ruler_range_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-range-ruler"), _("Range Markers"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
 	ruler_loop_punch_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-loop-punch-ruler"), _("Loop/Punch Ranges"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
 	ruler_cd_marker_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-cd-marker-ruler"), _("CD Markers"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
-	ruler_section_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-section-ruler"), _("Section Markers"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
+	ruler_section_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-arrangement-ruler"), _("Arrangement"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
 	ruler_marker_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-marker-ruler"), _("Location Markers"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
 	ruler_cue_marker_action = Glib::RefPtr<ToggleAction>::cast_static (ActionManager::register_toggle_action (ruler_actions, X_("toggle-cue-marker-ruler"), _("Cue Markers"), sigc::mem_fun(*this, &Editor::toggle_ruler_visibility)));
 
diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index 68dd77bc8f..48aed1c0b4 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -171,7 +171,7 @@ Editor::initialize_canvas ()
 	tempo_meta_group = new ArdourCanvas::Container (_time_markers_group, ArdourCanvas::Duple (0.0, (timebar_height * 4.0) + 1.0));
 	CANVAS_DEBUG_NAME (tempo_meta_group, "tempo meta group");
 	section_marker_group = new ArdourCanvas::Container (_time_markers_group, ArdourCanvas::Duple (0.0, (timebar_height * 5.0) + 1.0));
-	CANVAS_DEBUG_NAME (tempo_meta_group, "Section marker group");
+	CANVAS_DEBUG_NAME (tempo_meta_group, "Arranger marker group");
 	tempo_group = new ArdourCanvas::Container (tempo_meta_group, ArdourCanvas::Duple (0.0, 0.0));
 	CANVAS_DEBUG_NAME (tempo_group, "tempo group");
 	mapping_group = new ArdourCanvas::Container (tempo_meta_group, ArdourCanvas::Duple (0.0, 0.0));
@@ -221,7 +221,7 @@ Editor::initialize_canvas ()
 	CANVAS_DEBUG_NAME (cd_marker_bar, "CD Marker Bar");
 
 	section_marker_bar = new ArdourCanvas::Rectangle (section_marker_group, ArdourCanvas::Rect (0.0, timebar_top, ArdourCanvas::COORD_MAX, timebar_btm));
-	CANVAS_DEBUG_NAME (section_marker_bar, "Section Marker Bar");
+	CANVAS_DEBUG_NAME (section_marker_bar, "Arranger Marker Bar");
 
 	cue_marker_group = new ArdourCanvas::Container (_time_markers_group, ArdourCanvas::Duple (0.0, 0.0));
 	cue_marker_bar = new ArdourCanvas::Rectangle (cue_marker_group, ArdourCanvas::Rect (0.0, timebar_top, ArdourCanvas::COORD_MAX, timebar_btm));
@@ -275,7 +275,7 @@ Editor::initialize_canvas ()
 	meter_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), meter_bar, MeterBarItem, "meter bar"));
 	marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), marker_bar, MarkerBarItem, "marker bar"));
 	cd_marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), cd_marker_bar, CdMarkerBarItem, "cd marker bar"));
-	section_marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), section_marker_bar, SectionMarkerBarItem, "section marker bar"));
+	section_marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), section_marker_bar, SectionMarkerBarItem, "arrangement marker bar"));
 	cue_marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), cue_marker_bar, CueMarkerBarItem, "cd marker bar"));
 	videotl_group->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_videotl_bar_event), videotl_group));
 	range_marker_bar->Event.connect (sigc::bind (sigc::mem_fun (*this, &Editor::canvas_ruler_bar_event), range_marker_bar, RangeMarkerBarItem, "range marker bar"));
@@ -1089,7 +1089,7 @@ Editor::color_handler()
 	cd_marker_bar->set_fill_color (UIConfiguration::instance().color_mod ("cd marker bar", "marker bar"));
 	cd_marker_bar->set_outline_color (UIConfiguration::instance().color ("marker bar separator"));
 
-	section_marker_bar->set_fill_color (UIConfiguration::instance().color_mod ("section marker bar", "marker bar"));
+	section_marker_bar->set_fill_color (UIConfiguration::instance().color_mod ("arrangement marker bar", "marker bar"));
 	section_marker_bar->set_outline_color (UIConfiguration::instance().color ("marker bar separator"));
 
 	cue_marker_bar->set_fill_color (UIConfiguration::instance().color_mod ("cd marker bar", "marker bar"));
diff --git a/gtk2_ardour/editor_markers.cc b/gtk2_ardour/editor_markers.cc
index c4b0c462d6..aef7730835 100644
--- a/gtk2_ardour/editor_markers.cc
+++ b/gtk2_ardour/editor_markers.cc
@@ -108,7 +108,7 @@ Editor::add_new_location_internal (Location* location)
 	if (location->is_cd_marker()) {
 		color = X_("location cd marker");
 	} else if (location->is_section()) {
-		color = X_("location section marker");
+		color = X_("location arrangement marker");
 	} else if (location->is_mark()) {
 		color = X_("location marker");
 	} else if (location->is_auto_loop()) {
@@ -425,7 +425,7 @@ Editor::location_flags_changed (Location *location)
 	if (location->is_cd_marker()) {
 		lam->set_color ("location cd marker");
 	} else if (location->is_section()) {
-		lam->set_color ("location section marker");
+		lam->set_color ("location arrangement marker");
 	} else if (location->is_mark()) {
 		lam->set_color ("location marker");
 	} else if (location->is_auto_punch()) {
@@ -714,7 +714,11 @@ Editor::mouse_add_new_marker (timepos_t where, Location::Flags extra_flags, int3
 		/* XXX i18n needed for cue letter names */
 		markername = string_compose (_("cue %1"), cue_marker_name (cue_id));
 	} else {
-		namebase = _("mark");
+		if (flags & Location::IsSection) {
+			namebase = _("verse");
+		} else {
+			namebase = _("mark");
+		}
 		_session->locations()->next_available_name (markername, namebase);
 
 		if (!choose_new_marker_name (markername)) {
diff --git a/gtk2_ardour/editor_rulers.cc b/gtk2_ardour/editor_rulers.cc
index d2d4b838a4..390a794656 100644
--- a/gtk2_ardour/editor_rulers.cc
+++ b/gtk2_ardour/editor_rulers.cc
@@ -246,7 +246,7 @@ Editor::popup_ruler_menu (timepos_t const & where, ItemType t)
 		break;
 
 	case SectionMarkerBarItem:
-		ruler_items.push_back (MenuElem (_("New Section Marker"), sigc::bind (sigc::mem_fun(*this, &Editor::mouse_add_new_marker), where, Location::Flags(Location::IsMark | Location::IsSection), 0)));
+		ruler_items.push_back (MenuElem (_("New Arrangement Marker"), sigc::bind (sigc::mem_fun(*this, &Editor::mouse_add_new_marker), where, Location::Flags(Location::IsMark | Location::IsSection), 0)));
 		break;
 
 	case CueMarkerBarItem:
@@ -345,7 +345,7 @@ Editor::store_ruler_visibility ()
 	node->set_property (X_("rangemarker"), ruler_range_action->get_active());
 	node->set_property (X_("transportmarker"), ruler_loop_punch_action->get_active());
 	node->set_property (X_("cdmarker"), ruler_cd_marker_action->get_active());
-	node->set_property (X_("section"), ruler_section_action->get_active());
+	node->set_property (X_("arrangement"), ruler_section_action->get_active());
 	node->set_property (X_("marker"), ruler_marker_action->get_active());
 	node->set_property (X_("cuemarker"), ruler_cue_marker_action->get_active());
 	node->set_property (X_("videotl"), ruler_video_action->get_active());
@@ -406,7 +406,7 @@ Editor::restore_ruler_visibility ()
 			}
 		}
 
-		if (node->get_property ("section", yn)) {
+		if (node->get_property ("arrangement", yn)) {
 			ruler_section_action->set_active (yn);
 		} else {
 			ruler_section_action->set_active (true);
diff --git a/gtk2_ardour/ruler_dialog.cc b/gtk2_ardour/ruler_dialog.cc
index e57d37468c..35344fa1eb 100644
--- a/gtk2_ardour/ruler_dialog.cc
+++ b/gtk2_ardour/ruler_dialog.cc
@@ -55,7 +55,7 @@ RulerDialog::RulerDialog ()
 	connect_action (range_button, "range-ruler");
 	connect_action (mark_button, "marker-ruler");
 	connect_action (cdmark_button, "cd-marker-ruler");
-	connect_action (section_button, "section-ruler");
+	connect_action (section_button, "arrangement-ruler");
 	connect_action (cuemark_button, "cue-marker-ruler");
 	connect_action (video_button, "video-ruler");
 }
diff --git a/gtk2_ardour/themes/blueberry_milk-ardour.colors b/gtk2_ardour/themes/blueberry_milk-ardour.colors
index 8196fcdab0..fd9104c599 100644
--- a/gtk2_ardour/themes/blueberry_milk-ardour.colors
+++ b/gtk2_ardour/themes/blueberry_milk-ardour.colors
@@ -50,6 +50,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:blue darker"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -175,7 +176,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting alt"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting clock"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting clock"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -374,7 +375,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="neutral:foregroundest"/>
     <ColorAlias name="selected region base" alias="widget:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:blue"/>
diff --git a/gtk2_ardour/themes/caineville-ardour.colors b/gtk2_ardour/themes/caineville-ardour.colors
index 31dd990eb0..cdde95d03f 100644
--- a/gtk2_ardour/themes/caineville-ardour.colors
+++ b/gtk2_ardour/themes/caineville-ardour.colors
@@ -51,6 +51,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:bg"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -176,7 +177,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting alt"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting clock"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting clock"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -375,7 +376,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="theme:contrasting alt"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>
diff --git a/gtk2_ardour/themes/clear_gray-ardour.colors b/gtk2_ardour/themes/clear_gray-ardour.colors
index bdf3353b23..8f4ad4eb88 100644
--- a/gtk2_ardour/themes/clear_gray-ardour.colors
+++ b/gtk2_ardour/themes/clear_gray-ardour.colors
@@ -51,6 +51,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="neutral:foreground2"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:blue darker"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -176,7 +177,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting clock"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting clock"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -375,7 +376,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="alert:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>
diff --git a/gtk2_ardour/themes/cubasish-ardour.colors b/gtk2_ardour/themes/cubasish-ardour.colors
index a9296699df..4fecb87ef0 100644
--- a/gtk2_ardour/themes/cubasish-ardour.colors
+++ b/gtk2_ardour/themes/cubasish-ardour.colors
@@ -51,6 +51,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="neutral:foreground"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:backgroundest"/>
     <ColorAlias name="audio automation track fill" alias="theme:contrasting clock"/>
     <ColorAlias name="audio bus base" alias="widget:blue darker"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -176,7 +177,7 @@
     <ColorAlias name="location marker" alias="widget:blue"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -375,7 +376,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:backgroundest"/>
     <ColorAlias name="selected midi note frame" alias="alert:cyan"/>
     <ColorAlias name="selected region base" alias="theme:contrasting clock"/>
     <ColorAlias name="selected time axis frame" alias="widget:blue"/>
diff --git a/gtk2_ardour/themes/dark-ardour.colors b/gtk2_ardour/themes/dark-ardour.colors
index 7a95dbe0b0..e4288cfc25 100644
--- a/gtk2_ardour/themes/dark-ardour.colors
+++ b/gtk2_ardour/themes/dark-ardour.colors
@@ -52,6 +52,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:blue darker"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -177,7 +178,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting less"/>
     <ColorAlias name="location punch" alias="widget:ruddy"/>
     <ColorAlias name="location range" alias="theme:contrasting less"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -376,7 +377,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="alert:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>
diff --git a/gtk2_ardour/themes/diehard3-ardour.colors b/gtk2_ardour/themes/diehard3-ardour.colors
index a191186ed8..b537fe6fa3 100644
--- a/gtk2_ardour/themes/diehard3-ardour.colors
+++ b/gtk2_ardour/themes/diehard3-ardour.colors
@@ -52,6 +52,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:blue"/>
     <ColorAlias name="audio master bus base" alias="neutral:background"/>
@@ -177,7 +178,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting clock"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -377,7 +378,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="alert:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>
diff --git a/gtk2_ardour/themes/recbox-ardour.colors b/gtk2_ardour/themes/recbox-ardour.colors
index 5918e03cbc..8fe5f822ea 100644
--- a/gtk2_ardour/themes/recbox-ardour.colors
+++ b/gtk2_ardour/themes/recbox-ardour.colors
@@ -52,6 +52,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="widget:blue darker"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -177,7 +178,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting clock"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:green"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -376,7 +377,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="alert:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>
diff --git a/gtk2_ardour/themes/unastudia-ardour.colors b/gtk2_ardour/themes/unastudia-ardour.colors
index a10dbaef57..c0f47062f8 100644
--- a/gtk2_ardour/themes/unastudia-ardour.colors
+++ b/gtk2_ardour/themes/unastudia-ardour.colors
@@ -50,6 +50,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="neutral:background2"/>
+		<ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="neutral:background2"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -175,7 +176,7 @@
     <ColorAlias name="location marker" alias="theme:contrasting clock"/>
     <ColorAlias name="location punch" alias="alert:ruddy"/>
     <ColorAlias name="location range" alias="alert:blue"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -373,7 +374,6 @@
     <ColorAlias name="secondary delta clock: background" alias="theme:bg2"/>
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
-		<ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="neutral:foregroundest"/>
diff --git a/gtk2_ardour/themes/xcolors-ardour.colors b/gtk2_ardour/themes/xcolors-ardour.colors
index e269a15e55..c4ba12fa99 100644
--- a/gtk2_ardour/themes/xcolors-ardour.colors
+++ b/gtk2_ardour/themes/xcolors-ardour.colors
@@ -51,6 +51,7 @@
   <ColorAliases>
     <ColorAlias name="active crossfade" alias="neutral:foreground"/>
     <ColorAlias name="arrange base" alias="theme:bg"/>
+    <ColorAlias name="arrangement marker bar" alias="neutral:background2"/>
     <ColorAlias name="audio automation track fill" alias="theme:bg"/>
     <ColorAlias name="audio bus base" alias="neutral:background"/>
     <ColorAlias name="audio master bus base" alias="neutral:backgroundest"/>
@@ -176,7 +177,7 @@
     <ColorAlias name="location marker" alias="alert:yellow"/>
     <ColorAlias name="location punch" alias="alert:red"/>
     <ColorAlias name="location range" alias="alert:greenish"/>
-    <ColorAlias name="location section marker" alias="theme:contrasting alt"/>
+    <ColorAlias name="location arrangement marker" alias="theme:contrasting alt"/>
     <ColorAlias name="lock button: fill active" alias="widget:bg"/>
     <ColorAlias name="lock button: led active" alias="alert:red"/>
     <ColorAlias name="lua action button: fill" alias="widget:bg"/>
@@ -375,7 +376,6 @@
     <ColorAlias name="secondary delta clock: cursor" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: edited text" alias="theme:contrasting alt"/>
     <ColorAlias name="secondary delta clock: text" alias="theme:contrasting alt"/>
-    <ColorAlias name="section marker bar" alias="neutral:background2"/>
     <ColorAlias name="selected midi note frame" alias="alert:ruddy"/>
     <ColorAlias name="selected region base" alias="alert:ruddy"/>
     <ColorAlias name="selected time axis frame" alias="alert:ruddy"/>