Matte Black with Gloss black stickers? That sounds pretty cool looking but it seems like you would lose most of the effect of the stickers at any range beyond a few feet.
I'll put some stuff on, but only white di-cuts. And only 2, or 3 max. I don't like it when it looks like someone just slapped every sticker they could find on their helmet. But to each his own, do what you like and rock it. Doesn't really matter how you look long as you're doing your thing haha.