Don't want to open a can of worms again, but if you read the parts books on the part numbers for heads, it show 8BA heads listed from 48-early 51 on F-1 thru F-6 and in late 51-52 they received 8RT heads. In July of 52, all earlier heads (8BA) were replaced by 8RT heads. We argued this point before, so please, don't drag it open again. As far as the correct colors, I don't think it can be determined as there's no one to ask who was there building these trucks and no one has come forth with documentation from the Ford Archives.
4t8v8- what are the markings on your heads?