diff --git a/gtk2_ardour/patch_change_widget.cc b/gtk2_ardour/patch_change_widget.cc
index 32ff85501d..521ad60313 100644
--- a/gtk2_ardour/patch_change_widget.cc
+++ b/gtk2_ardour/patch_change_widget.cc
@@ -249,10 +249,12 @@ PatchChangeWidget::refill_program_list ()
 
 	for (uint8_t pgm = 0; pgm < 128; ++pgm) {
 		if (!unset_notes.test (pgm)) {
+			_program_btn[pgm].set_name (X_("patch change button"));
 			continue;
 		}
 		std::string n = string_compose (_("Pgm-%1"), (int)(pgm +1));
 		_program_btn[pgm].set_text (n);
+		_program_btn[pgm].set_name (X_("patch change dim button"));
 		set_tooltip (_program_btn[pgm], n);
 	}
 
diff --git a/gtk2_ardour/themes/dark-ardour.colors b/gtk2_ardour/themes/dark-ardour.colors
index 11524be587..9c201dc46b 100644
--- a/gtk2_ardour/themes/dark-ardour.colors
+++ b/gtk2_ardour/themes/dark-ardour.colors
@@ -335,6 +335,11 @@
     <ColorAlias name="nudge clock: text" alias="color 49"/>
     <ColorAlias name="page switch button: fill active" alias="color 92"/>
     <ColorAlias name="page switch button: fill" alias="color 94"/>
+    <ColorAlias name="patch change button: fill active" alias="color 74"/>
+    <ColorAlias name="patch change button: fill" alias="color 25"/>
+    <ColorAlias name="patch change dim button: fill active" alias="color 74"/>
+    <ColorAlias name="patch change dim button: fill" alias="color 46"/>
+    <ColorAlias name="patch change dim button: text" alias="color 92"/>
     <ColorAlias name="piano roll black" alias="color 76"/>
     <ColorAlias name="piano roll black outline" alias="color 33"/>
     <ColorAlias name="piano roll white" alias="color 45"/>