I went to the grocery store and bought the first white nail polish and the first red nail polish I saw. I taped the sides of the sight and looked down the sights of the (unloaded) revolver so I could pinpoint the area I wanted to highlight in color. I put the white on first and let it dry about 90%, then kind of dabbed it very lightly with my finger to texture it a bit. Once it was 100% dry I put red nail polish over top. S’pose I could have used orange or green or whatever... maybe lavender with glitter in it... but I liked red. If a gun’s gonna wear nail polish, it should look classy enough for a night out on the town, I say. Anyhow, on a stainless gun nail polish remover with acetone on a q-tip will take it right off. I would NOT use that product on a blued gun, unless someone more knowledgeable than me on this forum says acetone is OK.