...I have a coupla the Sharpie metallic pens in an organizer at my glass station, and decided(for $hits&giggles)

to try using it to touch-up the stone chips on the Bama Bambino's nose. It worked really well...

...I used a sewing needle to apply it into the smallest blems. It's not a perfect match(which is to be expected with a metallic finish), but you have to look close for the blems to find them. I've done the Sharpie touch-up trick on other cars with varying degrees of success, neutral colors give the best results.