diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 93707da715..2f21c0e28b 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -372,6 +372,14 @@
     <Option name="record enable button: led active" value="ffa3b3ff"/>
     <Option name="record enable button: text" value="a5a5a5ff"/>
     <Option name="record enable button: text active" value="000000ff"/>
+    <Option name="generic button: fill start" value="3e312fff"/>
+    <Option name="generic button: fill end" value="3f312fff"/>
+    <Option name="generic button: fill start active" value="c10b0bff"/>
+    <Option name="generic button: fill end active" value="fd0000ff"/>
+    <Option name="generic button: led" value="7b3541ff"/>
+    <Option name="generic button: led active" value="ffa3b3ff"/>
+    <Option name="generic button: text" value="ff0000ff"/>
+    <Option name="generic button: text active" value="000000ff"/>
     <Option name="send alert button: fill start" value="4e5647ff"/>
     <Option name="send alert button: fill end" value="43493cff"/>
     <Option name="send alert button: fill start active" value="91f928ff"/>
diff --git a/gtk2_ardour/canvas_vars.h b/gtk2_ardour/canvas_vars.h
index becb138e62..e9dde4c1af 100644
--- a/gtk2_ardour/canvas_vars.h
+++ b/gtk2_ardour/canvas_vars.h
@@ -232,6 +232,7 @@ BUTTON_VARS(RouteButton, "route button")
 BUTTON_VARS(MixerStripButton, "mixer strip button")
 BUTTON_VARS(MixerStripNameButton, "mixer strip name button")
 BUTTON_VARS(MidiInputButton, "midi input button")
+BUTTON_VARS(GenericButton, "generic button")
 
 #define CLOCK_VARS(root,name) \
 	CANVAS_VARIABLE(canvasvar_ ## root ## Background, name ": background") \