I am a body man so here it goes. In a "dual stage" paint (base clear) the color dries to a non gloss finish. Then you clear it and the color becomes shiny. Single Stage is color that has clear mixed in with it, so when it dries it dries shiny. Clear also is a UV protectant that will protect the color longer than single stage will agaist the sun. As for color, single stage usually comes in a one color shade, metallic single stage is a pain and very hard to spray. Base clear is much more sophisticated and can be used with special metallics and pearls an all that fun stuff. Our cars, from the factory if they are, white, black, staight red are most likely single stage colors. Your metallic colors will most definitly be base clear. If you wax your car and the residue comes off the color of your car, then you know its single stage. If its white, then its clear (unless the car is white, you people can never tell what it is) ALSO, our cars do not have enamel or laquer paint on them. They have a hardened paint. Instead of it "drying" it cures with a hardener that cross links the chemistry of the paint and locks it in place forever (it works like an epoxy), thinner wont hurt it, nothing will unless its of coarse aircraft paint stripper, or sand paper hehe. If yall gots any questions just ask me and I should be able to answer them.