You've been to Ace hardware or the like I'm sure....Go to the paint section and pick up the Rustolium oil-based paint. Really you ask?! Yup, I works very well for painting cars too. No joke. https://www.google.com/aclk?sa=l&ai=DChcSEwiFl7OCqoL9AhW2E60GHbUZBhwYABADGgJwdg&sig=AOD64_2owDxndP0FJZaUYpaSixJPsniTmw&adurl&ctype=5&ved=2ahUKEwi_1KWCqoL9AhXfB0QIHfGOB8YQvhd6BAgBEFg
Super cheap too in comparison to traditional automotive paint or the good stuff in Reno. Durability and longevity including UV resistant. Don't take my word for it. Try it, then decide.