I'm not sure if anyone has discussed this but the Duplicolor Perfect Match in Charcoal Gray Metallic is a pretty good match. Not too long ago I bought a UK rear fog light and the housing is unpainted and I really don't know where to go to things painted, especially something that small. I found this paint at O'Reilly's for just a few bucks.

 

And this is how it turned out.

 

Looks good to me

 

looks like a decent match. thanks for posting this up.