You're bound to get scratches and scrapes when you buy these in bulk. Even handling/installing them can result in occasional scratches. What are some good marker/paint brands for touching them up?
I suspect the particular black dye or concentration used for coloring after anodizing may play a part in this so a perfect match would be next to impossible in all cases. Nevertheless, something like a black Sharpie marker would be way off in most cases since it has too much purple in it. IOW, some blacks will be more suitable than others. Thanks!