I tried polishing. OK, White Out, better, But finally a FretFX unit on the side of the fretboard. In a darker environment,even when polished, the Bronze was hard to see for me. The White out wears off fairly easily. The FretFX, although after getting used to the feel of the thin lighted strip on the neck, was quite a help in darker areas. About 80 dollars, it was worth it I guess.