another option is to lightly sand the stock chrome ones with ultra fine sandpaper (to scuff them up for paint adhesion), and then paint them with the heat tolerant paint, such as VHT brand paint. I did that on mine and its holding up well. I did two coats of the black VHT satin, and then coat of clear coat VHT satin.
Here is a link to what I used https://www.amazon.com/VERY-HIGH-TEM...021143&sr=8-47