My 58 panel had a blue 235 in it. I put a 235 from a 57 belaire in it. It was blue. I used 1 coat of the rustoleum and top coat with the GM BLUE. The fan was the original blue. That matched . I think most trucks were grey.
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel