How do you repaint metal wheels?

Hey guys,

I got a bit of a problem here. My Galaxy Pegasis WR105R2F's metal wheel is scratched. The blue color of the wheel have been ripped off and exposes it's metallic material. I want to bring back it's original blue metallic color by repainting it, but with what kind of paint? and how to paint it?

Thanks for all your input and comments

I live in Indonesia but I bought the Galaxy Pegasis when I visited Japan a few months ago
Um thick paint and is this thread really needed because its quite thick.
You should have asked this in the "Ask a Question, Get and Answer" Thread.