Okay, I know this is a bit goofy but it's puzzled me-and it's not a toupee question!
I'm a big film fan(natch)and years ago was reading a film history book with a candid picture of Benny, Carole Lombard and others doing a table read during production of for "To be or Not To Be". It's a non-posed, unofficial shot--Carole is not wearing makeup, and neither is Jack, because what struck me about the photo is that is seems obvious that his hair in 1940 wasn't black or even dark, but looked quite gray.
Over the years since, in a lot of candid photographs--for instance the WW2 "entertaining the troops" pictures, I've noticed Jack also appears to have gray hair. So...since obviously he's not gray in any official pictures...the question is--what was he doing to his hair? I mean,if he'd just dyed it(the easiest option one would think)it'd be dark all the time. Was there some brilliantine-type stuff that got a temporary effect for cameras or something? Am I hallucinating? It's a curious thing.
As an aside, I have to say you really get a sense of how nice a person Jack was in candids...he always looks totally relaxed and smiling-if not outright laughing. Far from the case with a lot of other performers when seen off the set.