Mine are like those too. Paid $40 for all four, they were originally white but the fronts were painted over in silver. Came off my friends old Bronco when they bought Classic II's. I stripped them with aircraft stripper, took a few coats to get all the powdercoating off. Primed them with self etching primer, painted with Krylon Rust Tough semi flat black, and cleared them with Clearcoat made for wheels (All rattle can). They came out pretty nice, for the $$$ I have in them, I'm happy. I say go for it.
Bryan