Gentlemen,
Thanks for the input, but it still seems like shark infested murky water as to which color should/would have been used originally. One thing is clear in that it was black or brown! I suppose I will just make a command decision and go with it. My rig is a prewar 41 military, and I have seen both brown and OD green headliners. Perhaps I can try to decipher the different shades of gray in the technical manuals...
Alkay3, I love the provenance of your old family 1 1/2 ton truck. I think it may have a stronger pedigree than I do!
Paul
