I painted a light at work with MIL-SPEC Carc Tan. Just like angelofwar said, Alchol, prime, the light coats of the main color or colors in your case.
I think it turned out great, although the light was a 1xaa riverrock, I gave it away. But the guy loves it, Always talking about how well the paint holds up.
The main thing is follow the directions of the paint that you will be using.