hey i have a black bike and i just recently painted mine. i first sanded the surface to roughen it up a little, then primed it with spray primer to protect the paint from the heat.. I personally wouldnt go for a glossy tone since i think it'll make the aluminum look like plastic. I painted mine with a textured metallic black that i found at autozone for $10. it looks great and it matches the some of the tones of the of the bike but still holds a solid aluminum look. I will upload pictures tomorrow!!