I painted the replacement front fender I bought a year ago. It was originally red, and I plan to paint it dark blue, along with the bike frame, but temporarily painted it an off-white color, the same as the side covers. I didn’t want to have a red fender on my light blue bike. I used Rustoleum “Paint for Plastic”, and it turned out pretty good. I will put on a coat or two of clear coat in a couple days after it dries a bit.