Don't worry mate, bolts get scratched up.
And remember, there's no such thing as a stupid question.
(Just loud mouthed tools who have a go at a perfectly legitimate concern
Keep asking dude, it's how I learned. (Once put the bolt in my cocker upside down!!!!!)
And I reckon people should stop using gay as a general insult. Before they get the crap kicked out of them by a 6'2" homosexual
Anyway, when my bolts get scratched, I buy a new marker
or if they get mud on them, or they don't match my goggles or....