There is an answer out here for your situation. You might need to research this but,
First, clean off the area to be painted. Wire brush it if necessary and rough it up.
Go to a Paint Dealer, not a home center, and tell them about your situation. I know that Rustoleum makes paint that is heat treated. I use it on my BBQ and Smoker and it gets very hot and the paint is still on. They make all colors, so there is your color.
Ask them also about a primer that will compliment this paint.
Put many coats on the area, but apply one thin coat, let it dry good, then another thin coat and let it dry and so on and so on.