I bought a zinc spray that I will be using to protect the subframe I am rehabbing. I spoke to the manufacturer about the application and they said the spray could be top coated with any type of paint. What suggestions can you all provide for a black to be used on the frame, control arms, steering etc.... The zinc paint is flat aluminum or glossy (I have both). Frame should be different than control arms? I have seen some pics of restored cars that have multiple black finishes.