We are close to finishing a winter father/son project restoring a 1980 Z28. Car goes to body shop Monday for professional touch up of body work and then paint. My son (turns 16 in August and will drive the car) wants a dark metallic color. Maybe a dark charcoal. Any suggestions from someone who has done this and used a decal set? We are not requiring original colors from 1980 and like the new camaro dark color. I want to make sure it looks good even if a few days out from a wash. Body shop uses PPG paints.