Activa antimicrobial coating in pewter did a great job and covered a gloss orange wall paint without using a primer. It has a flat finish. The medium grey is a pleasant, soothing color. It did take 2 coats, as the instructions indicated. I used it in the cat’s room and I think it has helped ameliorate the cat litter smell. Another plus is the fact that it is eco-friendly and there is no odor on application.