Unfortunately in this day and age of swapping motors and painting them who knows what colors, you can never tell. But you're right, 390's were blue and 352 were black. Not sure on 360 colors. For all those guys out there helping me with my part number issues, I just finally put a barrel mic on my engine and found out that I do indeed have a 428! I checked the bore several times to make sure I was right. It will fit nicely in my 64 Gal! But now I'm going to have to do something about the tired old 3 in a tree that I have. Oh well, I'm sure the wife won't mind the extra few grand