I used black primer in the late 50's, and mixed it with red to get brown primer. and some one took a pict from the top of a building in 1959 of the college parking lot and my 53 chevy is right in the center, black primer with a yellow hood. One of the few color pictures in the college yeargook. My brother did not latch it tight, it blew up and the wreching yard replacement was a bright yellow 54. The engineering dean's daughter drove a primered purple 47 dodge coupe, grey primer she had color added.