Yes. But, what I mean is over a solid block color of, say, automotive paint from a spraycan. I've painted a guitar black and in the past I've used this high gloss spray (varathane, I think) but the fumes are crazy even with my mask on. I've used KTM on bare wood (sealed but unpainted) and I really like it. So I'm wondering if I can use it over my black paint job.