Painting Rubber Bumpers
The best all around user friendly paint would be Acrylic enamel. On the bumpers, using an “adhesion promotor” for plastic or rubber parts helps a lot. When you choose a paint manufacture (PPG, DuPont, what ever) just ask the counter guy and he will have it for you. I personally wouldn\’t worry about the flex additive in the bumper paint. But it really isn\’t that big of a deal. If you painting them off the car, go ahead and add it. If you are mounting them first for some reason, don\’t mess with it, just paint he whole car at the same time.