You must be talking about the factory impala wheels. They're painted. I taped off the outter part, as well as the emblem on the center, put 2 coats of plastidip, followed by 2 coats of the cheap 1 dollar gloss black spray paint. I've since waxed each wheel and they still look very good. Just be careful when taping and be sure not to forget anywhere. Good luck.
I love your wheels. r they powder coated or painted? I have been juggling the idea of painting my wheels black and just saw yours and like it. If your centers are powder coated how did they do that if they r plastic?