for any that care or want to know, I went to tamiya's website and ordered 2 cans of metallic blue under the polycarbonate section. I should have ordered 3 just for peace of mind though. I used an automotive primer first. 1 can. after the blue was out on I sprayed 2 cans of krylon automotive clear coat on it. once it dries with the clear I'll post the finished picture.
tl;dr: 1 can of primer first. about 3 coats. 2 cans of tamiya metallic blue. about 2 coats. 2 cans of krylon clear. about 10 or 15 coats.