diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index e1db820fa9..0dadbecd4e 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -105,11 +105,11 @@
     <Option name="stereo panner text" value="1c0e7fff"/>
     <Option name="stereo panner bg" value="4c5161ff"/>
     <Option name="stereo panner mono outline" value="0a84acff"/>
-    <Option name="stereo panner mono fill" value="68bad4c9"/>
+    <Option name="stereo panner mono fill" value="f78513c9"/>
     <Option name="stereo panner mono text" value="1c0e7fff"/>
     <Option name="stereo panner mono bg" value="4c5161ff"/>
     <Option name="stereo panner inverted outline" value="0a84acff"/>
-    <Option name="stereo panner inverted fill" value="68bad4c9"/>
+    <Option name="stereo panner inverted fill" value="d46968c9"/>
     <Option name="stereo panner inverted text" value="1c0e7fff"/>
     <Option name="stereo panner inverted bg" value="4c5161ff"/>
     <Option name="tempo bar" value="70727fff"/>