diff --git a/gtk2_ardour/automation_region_view.cc b/gtk2_ardour/automation_region_view.cc
index afe5948ac3..db6c7bbcb0 100644
--- a/gtk2_ardour/automation_region_view.cc
+++ b/gtk2_ardour/automation_region_view.cc
@@ -87,7 +87,6 @@ AutomationRegionView::init (bool /*wfd*/)
 
 	set_height (trackview.current_height());
 
-	fill_color_name = "midi frame base";
 	set_colors ();
 }
 
@@ -110,12 +109,11 @@ uint32_t
 AutomationRegionView::get_fill_color() const
 {
 	const std::string mod_name = (_dragging ? "dragging region" :
-	                              trackview.editor().internal_editing() ? "editable region" :
-	                              "midi frame base");
+	                              trackview.editor().internal_editing() ? "editable region" : fill_color_name);
 	if (_selected) {
 		return UIConfiguration::instance().color_mod ("selected region base", mod_name);
 	} else if (high_enough_for_name || !UIConfiguration::instance().get_color_regions_using_track_color()) {
-		return UIConfiguration::instance().color_mod ("midi frame base", mod_name);
+		return UIConfiguration::instance().color_mod (fill_color_name, mod_name);
 	}
 	return UIConfiguration::instance().color_mod (fill_color, mod_name);
 }
diff --git a/gtk2_ardour/ghostregion.cc b/gtk2_ardour/ghostregion.cc
index f5158a041a..d62bf0c646 100644
--- a/gtk2_ardour/ghostregion.cc
+++ b/gtk2_ardour/ghostregion.cc
@@ -164,13 +164,14 @@ AudioGhostRegion::set_colors ()
 
 	if (is_automation_ghost()) {
 		fill_color = UIConfiguration::instance().color ("ghost track wave fill");
+		fill_color = UIConfiguration::instance().color_mod("ghost track wave fill", "region alpha");
 	}
 	else {
 		fill_color = source_track_color(200);
 	}
 
 	for (uint32_t n=0; n < waves.size(); ++n) {
-		waves[n]->set_outline_color (UIConfiguration::instance().color ("ghost track wave"));
+		waves[n]->set_outline_color (UIConfiguration::instance().color_mod ("ghost track wave", "region alpha"));
 		waves[n]->set_fill_color (fill_color);
 		waves[n]->set_clip_color (UIConfiguration::instance().color ("ghost track wave clip"));
 		waves[n]->set_zero_color (UIConfiguration::instance().color ("ghost track zero line"));
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index f79e068d4d..079a9b9fa3 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -262,8 +262,6 @@ MidiRegionView::init (bool /*wfd*/)
 	_model = midi_region()->midi_source(0)->model();
 	assert (_model);
 
-	fill_color_name = "midi frame base";
-
 	RegionView::init (false);
 
 	//set_height (trackview.current_height());
@@ -3700,7 +3698,7 @@ MidiRegionView::get_fill_color() const
 
 	if ((!UIConfiguration::instance().get_show_name_highlight() || high_enough_for_name) &&
 	    !UIConfiguration::instance().get_color_regions_using_track_color()) {
-		return UIConfiguration::instance().color_mod ("midi frame base", mod_name);
+		return UIConfiguration::instance().color_mod (fill_color_name, mod_name);
 	}
 
 	return UIConfiguration::instance().color_mod (fill_color, mod_name);