I used krylon on some plastics. Took every step before hand and the spray came out great. I decided to clear it aswell, I never used krylon clear. I think it was tremclad. Had a horrible reaction and ate the hell out of my nice paint job. They weren't atv plastics but plastic is plastic. I ended up getting them painted at a shop for barely more then I spent on all my material. I wouldn't spray anything plastic now. Wetsand. There's also a video online I saw a guy using a razor blade on a motor cross fender that was all white from sun exposure. Seemed like a quick fix. I've never attempted that though.