diff -uNr clearlooks-phenix-theme-6.0.3/gtk-3.0/gtk-widgets.css clearlooks-phenix-theme-6.0.3p/gtk-3.0/gtk-widgets.css
--- clearlooks-phenix-theme-6.0.3/gtk-3.0/gtk-widgets.css	2014-10-03 08:48:38.000000000 +0200
+++ clearlooks-phenix-theme-6.0.3p/gtk-3.0/gtk-widgets.css	2014-12-12 16:59:48.178104570 +0100
@@ -54,6 +54,14 @@
 	background-color: @theme_bg_color;
 }
 
+.background.client-decorated {
+	background-color: transparent;
+}
+
+.background.window-content {
+	background-color: @theme_bg_color;
+}
+
 *:selected,
 *:selected:focus {
 	background-color: @theme_selected_bg_color;