I bought a chrome paint kit from a company for $400. I followed their directions to a tee and the finished bumper looked gray??? I then called them up and asked if I did anything wrong. They asked if I primed the bumper before I applied their product. I told them no cause it wasn't in the instructions and I figured the supplied black base coat was the primer. Anyways I stripped the bumper back to glass, primed it as recommended, sprayed their black base coat on and let it sit/cure their recommended 10 days, then sprayed on their chrome top coat. The end result?...I wasn't a happy camper. FWIW, I would have gotten the same results if I used a rattle can of satin gray Rustolium. I would have gladly paided $700 to get a glass bumper that actually looked like chrome.