Anyone paint the center caps for their wheels?

[FFORMULA78]

I bought a firebird formula but it came with camaro wheels & center caps. Looks kind of retarded and i want to either change the wheels or paint the center caps so it doesn't say CAMARO on them. How would i go about painting the caps? They look like these in this link.





Would i have to sand them down and if so, what grade of sand paper? Ive never done anything like this so pls tell me exactly how to do it. Or, do they make Pontiac centercaps that will fit into the camaro wheels?

Thanks