As you will find there is much debate and some conjecture. I am not an expert. I found that my 283 may have been grey and I liked the color better, so I went with it and am happy I did.
~ HB 1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery 1962 Chevrolet C10 1962 Suburban