diff --git a/gtk2_ardour/themes/dark-ardour.colors b/gtk2_ardour/themes/dark-ardour.colors
index 95fed695f6..2b63377fcc 100644
--- a/gtk2_ardour/themes/dark-ardour.colors
+++ b/gtk2_ardour/themes/dark-ardour.colors
@@ -495,7 +495,7 @@
     <Modifier name="loop rectangle" modifier="= alpha:0.5"/>
     <Modifier name="marker bar" modifier="= alpha:0.5"/>
     <Modifier name="grid line" modifier="= alpha:1.0"/>
-    <Modifier name="midi frame base" modifier="= alpha:0.4"/>
+    <Modifier name="midi frame base" modifier="= alpha:0.79"/>
     <Modifier name="midi note" modifier="= alpha:0.8"/>
     <Modifier name="midi note velocity text" modifier="= alpha:0.4666"/>
     <Modifier name="midi patch change fill" modifier="= alpha:0.6274"/>