What type of UV-resistant (fade-resistant) paint is best as the outer coating of a rain barrel? The barrel is made of polyethylene. It will sit in a greenhouse, so other than direct sunlight and slight temperature variations, it's relatively protected from other types of abuse.
I would like to use black paint to maximize solar-heat absorption.
Basically the paint needs to be durable, adhere well and won't crack or come off over time.