Make the inactive window framess less opaque.

Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>

Index: src/compositor.c
===================================================================
diff -ur ../xfwm4~/src/compositor.c ../xfwm4/src/compositor.c
--- ../xfwm4~/src/compositor.c	2006-06-27 18:36:08.000000000 +0100
+++ ../xfwm4/src/compositor.c	2006-06-27 18:37:57.000000000 +0100
@@ -898,7 +898,7 @@
             double shadow_opacity;
             shadow_opacity = (double) screen_info->params->frame_opacity
                                       * SHADOW_OPACITY
-                                      * cw->opacity
+                                      * calculate_opacity(cw)
                                       / (NET_WM_OPAQUE * 100.0);
 
             cw->shadow = shadow_picture (screen_info, shadow_opacity,
@@ -1090,7 +1090,7 @@
             if (!cw->alphaBorderPict)
             {
                 double frame_opacity;
-                frame_opacity = (double) cw->opacity
+                frame_opacity = (double) calculate_opacity(cw)
                                          * screen_info->params->frame_opacity
                                          / (NET_WM_OPAQUE * 100.0);