EM Auto uses DuPont ChromaBase BC, a basecoat/clearcoat system. DuPont has a computer program to calculate paint formulas that will exactly match car colors. Once EM Auto was satisfied with the color choice, the paint is mixed using these tints and other ingredients. The fixtures on the paint cans aren’t just their spouts; each fixture is hooked to a motor that spins a small paddle in the can to mix the paint when needed.