Color change paint job????

I have a body that a want to paint but I also want that color change effect. Does anybody know what kind and color of paint(s) to use? Also which color do I put down first? I am new to modding so I really need some help.

[N2O]

Hmmm that would be tricky, but maybe you could try flip car bumper spray ...The flip bit is it changes from 1 color E.G PURPLE, to another color E.G GOLD and the bumper bit is for REAL cars(the bumper is plastic so it should work on models!)...so just ask someone that knows about REAL cars and ask where to get the spray...and boom, there ya go 1 flip beast!