diff -ur xfwm4-4.2.0-original/src/events.c xfwm4-4.2.0/src/events.c
--- xfwm4-4.2.0-original/src/events.c	2005-01-13 20:25:35.000000000 +0000
+++ xfwm4-4.2.0/src/events.c	2005-01-18 18:35:57.760459472 +0000
@@ -1531,6 +1531,8 @@
     {
         TRACE ("focus set to \"%s\" (0x%lx)", c->name, c->window);
         screen_info = c->screen_info;
+		c->opacity = NET_WM_OPAQUE;
+		compositorWindowSetOpacity (display_info, c->frame, c->opacity);
         clientUpdateFocus (screen_info, c, FOCUS_SORT);
         last_raised = clientGetLastRaise (screen_info);
         if ((screen_info->params->click_to_focus) && 
@@ -1587,6 +1589,8 @@
         if ((c) && (c == clientGetFocus ()))
         {
             TRACE ("focus lost from \"%s\" (0x%lx)", c->name, c->window);
+			c->opacity = 0x88000000;
+			compositorWindowSetOpacity (display_info, c->frame, c->opacity);
             clientUpdateFocus (c->screen_info, NULL, NO_FOCUS_FLAG);
             /* Clear timeout */
             clear_timeout ();
diff -ur xfwm4-4.2.0-original/src/settings.c xfwm4-4.2.0/src/settings.c
--- xfwm4-4.2.0-original/src/settings.c	2004-12-16 22:53:27.000000000 +0000
+++ xfwm4-4.2.0/src/settings.c	2005-01-18 18:36:08.383844472 +0000
@@ -661,13 +661,13 @@
     parseRc (THEMERC, theme, rc);
 
     screen_info->params->shadow_delta_x = 
-        abs (TOINT (getValue ("shadow_delta_x", rc)));
+        TOINT (getValue ("shadow_delta_x", rc));
     screen_info->params->shadow_delta_y = 
-        abs (TOINT (getValue ("shadow_delta_y", rc)));
+        TOINT (getValue ("shadow_delta_y", rc));
     screen_info->params->shadow_delta_width = 
-        abs (TOINT (getValue ("shadow_delta_width", rc));
+        -1 * (TOINT (getValue ("shadow_delta_width", rc)));
     screen_info->params->shadow_delta_height = 
-        abs (TOINT (getValue ("shadow_delta_height", rc));
+        -1 * (TOINT (getValue ("shadow_delta_height", rc)));
 
     for (i = 0; i < 20; i++)
     {