im goin to be clear coating the bare steal roof of my car with a black candy tinted clear. my question is, is there any kind of special clear or coating that i need to spray to the bare metal in place of priming it, or will the clear hold on to the surface by it self? what ever i use it has to be clear to the metal can be seen through the paint. i know this can be done ’cause ive seen it a few times on other cars. thanks