diff --git a/gtk2_ardour/ardour2_ui_default.conf b/gtk2_ardour/ardour2_ui_default.conf
index f5988442f7..034dd75b0f 100644
--- a/gtk2_ardour/ardour2_ui_default.conf
+++ b/gtk2_ardour/ardour2_ui_default.conf
@@ -69,8 +69,8 @@
     <Option name="ImageTrack" value="ddddd8ff"/>
     <Option name="MarkerTrack" value="ddddd8ff"/>
     <Option name="ZeroLine" value="b5b5b5ff"/>
-    <Option name="GainLine" value="ff00ffff"/>
-    <Option name="GainLineInactive" value="f0f0ffff"/>
+    <Option name="GainLine" value="00bc20ff"/>
+    <Option name="GainLineInactive" value="9fbca4c5"/>
     <Option name="RecordingRect" value="e5c6c6ff"/>
     <Option name="SelectionRect" value="e8f4d377"/>
     <Option name="Selection" value="636363b2"/>