diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 3aa454a6ac..e6c4367e80 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -141,7 +141,7 @@
     <Option name="video timeline bar" value="303030ff"/>
     <Option name="region base" value="99a7b5a0"/>
     <Option name="region area covered by another region" value="505050b0"/>
-    <Option name="waveform outline" value="0f0f0fc8"/>
+    <Option name="waveform fill" value="3d4753dc"/>
     <Option name="clipped waveform" value="ff0000e5"/>
     <Option name="waveform fill" value="bde7b9dc"/>
     <Option name="zero line" value="b5b5b525"/>