I scratched the fender on my hour's-old Tri-Glide, On the left fender, About 3 inches long, Blue paint... I remembered an old caveman trick, So I took one of my grandkids blue crayon, And matched the color....Ran it down the scratch, and let it sit in the hot sun...[A heat gun will work also] till it melted in , Then waxed over it, I can not see the scratch at all... Your results may differ, But i never seen a paint pen that covers a scratch without leaving a tell-tail darker line....