Well you can get high temp paint at most auto parts stores. The highest temp stuff only comes in flat colors, but the medium temp stuff comes in gloss finishes.

I tried to do this, and my recomendation would be use the highest temp stuff, and only do one or two thin coats.

Because if you get it too thick it might not completely cure and start to melt. I bagged mine because this happened. I used the medium temp gloss black with a few coats. Got a new one and polished it instead.