I had the frame done in grey(can't remember which one) and the cylinder done in armorer's black. I think my truck gun turned out great. It was coated by The Drakes Camo Customs, and I could not be more thrilled with the job that they did.
I was lucky. They had a $50 special because they already had it mixed from another gun they were doing. I think it is usually 100 bucks for everything including the armorers fee.