Heat Resistant Paint For Light Fixtures . The best paint for bulbs that reach a high temp can be found in the. Take down the light fixtures. How to Paint Light Bulbs Painted light bulbs, Light bulb crafts from www.pinterest.com How to use high heat resistant paint for light fixtures step 1: Remove the bulbs and place them in a safe spot away from your painting area. So by painting all 3 light fixtures (well, 4 in total), we saved a bunch of money (and time and effort) by not replacing.