diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 1248e72ea4..d78734f710 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -271,38 +271,38 @@
     <Option name="monitor section dim: text" value="c8c8d9ff"/>
     <Option name="monitor section dim: text active" value="c8c8d9ff"/>
     <Option name="monitor section dim: text mid" value="00000000"/>
-    <Option name="monitor section: solo border start" value="b7b7d2ff"/>
-    <Option name="monitor section: solo border end" value="000000ff"/>
-    <Option name="monitor section: solo border start selected" value="9a908eff"/>
-    <Option name="monitor section: solo border end selected" value="675c5bff"/>
-    <Option name="monitor section: solo fill start" value="5d5856ff"/>
-    <Option name="monitor section: solo fill end" value="564d48ff"/>
-    <Option name="monitor section: solo fill start active" value="f4f395ff"/>
-    <Option name="monitor section: solo fill end active" value="fffe1dff"/>
-    <Option name="monitor section: solo fill start mid" value="f4f395ff"/>
-    <Option name="monitor section: solo fill end mid" value="fffe1d00"/>
-    <Option name="monitor section: solo led" value="473812ff"/>
-    <Option name="monitor section: solo led active" value="ffa500ff"/>
-    <Option name="monitor section: solo led mid" value="00000000"/>
-    <Option name="monitor section: solo text" value="00000000"/>
-    <Option name="monitor section: solo text active" value="00000000"/>
-    <Option name="monitor section: solo text mid" value="00000000"/>
-    <Option name="monitor section: invert border start" value="b7b7d2ff"/>
-    <Option name="monitor section: invert border end" value="000000ff"/>
-    <Option name="monitor section: invert border start selected" value="9a908eff"/>
-    <Option name="monitor section: invert border end selected" value="675c5b00"/>
-    <Option name="monitor section: invert fill start" value="5d5856ff"/>
-    <Option name="monitor section: invert fill end" value="564d48ff"/>
-    <Option name="monitor section: invert fill start active" value="03af01ff"/>
-    <Option name="monitor section: invert fill end active" value="008a00ff"/>
-    <Option name="monitor section: invert fill start mid" value="04af02ff"/>
-    <Option name="monitor section: invert fill end mid" value="008a0000"/>
-    <Option name="monitor section: invert led" value="473812ff"/>
-    <Option name="monitor section: invert led active" value="78cb4eff"/>
-    <Option name="monitor section: invert led mid" value="00000000"/>
-    <Option name="monitor section: invert text" value="00000000"/>
-    <Option name="monitor section: invert text active" value="00000000"/>
-    <Option name="monitor section: invert text mid" value="00000000"/>
+    <Option name="monitor section solo: border start" value="b7b7d2ff"/>
+    <Option name="monitor section solo: border end" value="000000ff"/>
+    <Option name="monitor section solo: border start selected" value="9a908eff"/>
+    <Option name="monitor section solo: border end selected" value="675c5bff"/>
+    <Option name="monitor section solo: fill start" value="5d5856ff"/>
+    <Option name="monitor section solo: fill end" value="564d48ff"/>
+    <Option name="monitor section solo: fill start active" value="f4f395ff"/>
+    <Option name="monitor section solo: fill end active" value="fffe1dff"/>
+    <Option name="monitor section solo: fill start mid" value="f4f395ff"/>
+    <Option name="monitor section solo: fill end mid" value="fffe1d00"/>
+    <Option name="monitor section solo: led" value="473812ff"/>
+    <Option name="monitor section solo: led active" value="ffa500ff"/>
+    <Option name="monitor section solo: led mid" value="00000000"/>
+    <Option name="monitor section solo: text" value="00000000"/>
+    <Option name="monitor section solo: text active" value="00000000"/>
+    <Option name="monitor section solo: text mid" value="00000000"/>
+    <Option name="monitor section invert: border start" value="b7b7d2ff"/>
+    <Option name="monitor section invert: border end" value="000000ff"/>
+    <Option name="monitor section invert: border start selected" value="9a908eff"/>
+    <Option name="monitor section invert: border end selected" value="675c5b00"/>
+    <Option name="monitor section invert: fill start" value="5d5856ff"/>
+    <Option name="monitor section invert: fill end" value="564d48ff"/>
+    <Option name="monitor section invert: fill start active" value="03af01ff"/>
+    <Option name="monitor section invert: fill end active" value="008a00ff"/>
+    <Option name="monitor section invert: fill start mid" value="04af02ff"/>
+    <Option name="monitor section invert: fill end mid" value="008a0000"/>
+    <Option name="monitor section invert: led" value="473812ff"/>
+    <Option name="monitor section invert: led active" value="78cb4eff"/>
+    <Option name="monitor section invert: led mid" value="00000000"/>
+    <Option name="monitor section invert: text" value="00000000"/>
+    <Option name="monitor section invert: text active" value="00000000"/>
+    <Option name="monitor section invert: text mid" value="00000000"/>
     <Option name="monitor section mono: border start" value="b7b7d2ff"/>
     <Option name="monitor section mono: border end" value="000000ff"/>
     <Option name="monitor section mono: border start selected" value="9a908eff"/>