diff --git a/gtk2_ardour/canvas_vars.h b/gtk2_ardour/canvas_vars.h
index c17b6ec323..4aa25d51dc 100644
--- a/gtk2_ardour/canvas_vars.h
+++ b/gtk2_ardour/canvas_vars.h
@@ -18,6 +18,7 @@
 */
 
 CANVAS_VARIABLE(canvasvar_ActiveCrossfade, "active crossfade")
+CANVAS_VARIABLE(canvasvar_ArrangeBase, "arrange base")
 CANVAS_VARIABLE(canvasvar_AudioBusBase, "audio bus base")
 CANVAS_VARIABLE(canvasvar_AudioMasterBusBase, "audio master bus base")
 CANVAS_VARIABLE(canvasvar_AudioTrackBase, "audio track base")
diff --git a/gtk2_ardour/default_ui_config.in b/gtk2_ardour/default_ui_config.in
index 72f86ace36..b5d5edb9ae 100644
--- a/gtk2_ardour/default_ui_config.in
+++ b/gtk2_ardour/default_ui_config.in
@@ -11,9 +11,10 @@
   </UI>
   <Canvas>
     <Option name="active crossfade" value="ffffff79"/>
+    <Option name="arrange base" value="595959ff"/>
     <Option name="audio bus base" value="73829900"/>
     <Option name="audio master bus base" value="00000000"/>
-    <Option name="audio track base" value="9daac400"/>
+    <Option name="audio track base" value="9daac4ff"/>
     <Option name="automation line" value="90FF3Cff"/>
     <Option name="automation track fill" value="575757f5"/>
     <Option name="automation track outline" value="575757ff"/>