also, shake has a large user base that's used to its current interface. if someone came along and changed the entire layout of a program you spent 3 months learning, you'd be screwed. look at any pro video/graphics app, they're all dark. the contrast actually helps a lot when you're doing a lot of editing, that's why apple apps that use the "pro kit" (fcp, soundtrack, dvdstudio, etc.) look different than normal aqua apps.