itsindilas

I have painted those type bodies.

Scuff up the surface with fine sandpaper and wash well with dishwashing soap and water. Spray it with an flexible bumper adhesion promoter and then a flexible bumper primer. You can fine these items at most auto parts stores. Be sure to read the instructions on the cans as some limit the amount of time to dry before putting on another coat.

I then paint mine with Krylon fluorescent yellow and orange paint. I just fade in the two colors with the spray cans. I then put on the decals I want and clear coat. I use Minwax clear gloss polyurethane. I don't use the type that says on the can "clean up with water". I had bad luck with it getting sticky and coming off with methanol. I haven't had any problems with the solvent based poly yet. It will take on a little bit of an amber tint so if that bothers you have it clear coated at an auto body shop.

Good luck