I've seen that too. Sometimes the image gets rendered opaque, other times not. I'd actually guess it's a Win7 thing and not the fault of VistaStyleBuilder but don't know.
Personally I just tried to pick a graphic which works in both forms, most of the time you get the transparent rendering anyway.
Personally I just tried to pick a graphic which works in both forms, most of the time you get the transparent rendering anyway.
What do you mean for "working in both forms"?