Metacity opacity change (On inactive windows)

Since one of the last releases of metacity, at least set as default in UBUNTU, inactive windows have set opacity to a semi transparent value. That's nice but... with some skins the effect is terrible.
Here the gconf values to set to achive a nicer look.
(Eventually if you like the opacity effect, my advice is to set to the entire window that effect (using compiz)).
Howto:
1. Open the GConf Editor (alt+F2, gconf-editor, Enter)
2. Navigate to /apps/gwd and set the metacity_theme_shade_opacity Value to 1 (should be 0.75 as said in Ubuntu)
Done!
Here some screens...
...Before

...After