Just adding to this that I purchased ERA 2K red caliper spray paint for about $55, and it's rated for up to 500 degrees F. It's an activated paint similar to what body shops use, so after it's cured it's resistant to any chemical your normal body paint is resistant to. To activate the paint, you press the button on the bottom to pop the activator into the paint can, and you have about 8 hours to use up the paint before it's cured.
This red paint matches the factory Brembo red perfectly.