diff -urN fvwm-2.6.5-orig/fvwm/style.c fvwm-2.6.5/fvwm/style.c
--- fvwm-2.6.5-orig/fvwm/style.c	2012-02-20 21:27:34 +0900
+++ fvwm-2.6.5/fvwm/style.c	2014-10-07 16:01:17 +0900
@@ -5378,6 +5378,20 @@
 		fw->border_colors.shadow = fw->colors.shadow;
 		fw->border_colors.back = fw->colors.back;
 	}
+	/* HACK: Add alpha to the color values if an ARGB visual  --AC */
+	extern Display *dpy;
+	FRenderPictFormat *format = FRenderFindVisualFormat(dpy, fw->attr_backup.visual);
+	if (format != NULL && format->type==PictTypeDirect &&
+		format->direct.alphaMask > 0)
+	{
+		fw->colors.fore    |= format->direct.alphaMask << format->direct.alpha;
+		fw->colors.back    |= format->direct.alphaMask << format->direct.alpha;
+		fw->colors.shadow  |= format->direct.alphaMask << format->direct.alpha;
+		fw->colors.hilight |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_colors.back    |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_colors.shadow  |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_colors.hilight |= format->direct.alphaMask << format->direct.alpha;
+	}
 }
 
 void update_window_color_hi_style(FvwmWindow *fw, window_style *pstyle)
@@ -5432,6 +5446,20 @@
 		fw->border_hicolors.shadow = fw->hicolors.shadow;
 		fw->border_hicolors.back = fw->hicolors.back;
 	}
+	/* HACK: Add alpha to the color values if an ARGB visual  --AC */
+	extern Display *dpy;
+	FRenderPictFormat *format = FRenderFindVisualFormat(dpy, fw->attr_backup.visual);
+	if (format != NULL && format->type==PictTypeDirect &&
+		format->direct.alphaMask > 0)
+	{
+		fw->hicolors.fore    |= format->direct.alphaMask << format->direct.alpha;
+		fw->hicolors.back    |= format->direct.alphaMask << format->direct.alpha;
+		fw->hicolors.shadow  |= format->direct.alphaMask << format->direct.alpha;
+		fw->hicolors.hilight |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_hicolors.back    |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_hicolors.shadow  |= format->direct.alphaMask << format->direct.alpha;
+		fw->border_hicolors.hilight |= format->direct.alphaMask << format->direct.alpha;
+	}
 }
 
 void update_icon_title_cs_style(FvwmWindow *fw, window_style *pstyle)