GTS Stock Rims - Scratched - Help

OK, I did something I haven't done in a little too close to the curb...flames please, I've already beaten myself up over it... It isn't that bad though, just a rough area about one inch long on the outside edge of the rim...I'm thinking some sort of touch-up paint would probably fill it in almost perfectly, obviously silver of some sort, but does anyone have any specific suggestions as to type, color, etc?