There's an urban legend that you can paint chromed steel after etching it with EZ-off oven cleaner. I've never tried it, but realistically, any "good" way to refinish it will require removing it from the vehicle. I think if you could hand sand it enough, then any real car paint package (2-part primer, 2-part paint) would hold up. If you're talking 10 minutes with a scotch-brite and a rattle can, it's not going to be durable.