--- src/fr-window.c.orig	2008-10-04 23:13:56.183696582 +0800
+++ src/fr-window.c	2008-10-04 23:13:32.283699823 +0800
@@ -760,7 +760,13 @@
 	window->priv = g_new0 (FrWindowPrivateData, 1);
 	window->priv->update_dropped_files = FALSE;
 	window->priv->filter_mode = FALSE;
-
+/*	Set RGBA colormap   */
+	GdkScreen *screen = gtk_widget_get_screen(window);
+	GdkColormap *colormap = gdk_screen_get_rgba_colormap (screen);
+	if (colormap && gdk_screen_is_composited (screen)){
+		gtk_widget_set_default_colormap(colormap);
+	}
+/*	End set RGBA colormap   */
 	WindowList = g_list_prepend (WindowList, window);
 }