How to make the explorer background transparent ?

[JoCe-from-France]

I've tried a couple of things in explorer itemsview to replace the fillcolor, none of them worked.
A lot of themes currently produced show this though.... but I haven't found any explanations with my friend Google until now.

Does anyone knows ?

[Panda X]

There's a couple of applications on DA that'll do it.

One's included in this theme though I haven't tested it myself: http://nguyenxuanhoa.deviantart.com/art/VS-full-glass-for-win7-149409301