I have an AIR project that I'm trying to switch to a different theme, but no matter what the background of the app is always white when I compile it. All of the text, buttons and other components switch over to the theme just fine, the background is the only thing that isn't right. It seems to be working fine with regular (non-AIR) flex projects, and the problem persists even if I create a fresh, empty AIR project with a single button and try to set the theme. If tried searching around for a solution to the problem, but haven't been able to find anything. Any ideas what could be causing this?