@andy- yes he can, just i would need its fare share of room in the case, and from what i know, gbc's dont have much extra room in them
@timmeh- i think if you look for "rgb leds" then you might find multi-color ones, idk about rainbow but you might find more then just 1 color
- paintjob wouldnt be too hard, just decase, sand, then spray or w/e you have in mind, then usually a clear coat over it
-same thing about the speakers, if you have the room then fit what you can
-but the steel backplate would problly be hardest, seeing as ive never seen one made before, so you'd have to mold it then get the steel yada yada yada