Hey /m/, I have a small problem with my core drill from the Gurren Lagann Revoltech.

I decided that I'd use it as a kind of necklace/pendant thing, so used one of those ball-chain lanyard things so I could wear it.

Trouble is, seems this has rubbed the paint off of it somewhat, namely the inside of the center hole and a little the edge of the "handle" (for lack of a better term).

So, I was wondering: What paint (brand, type and color) would be best to do a bit of a repair job on it?