I can recall several different people bringing this up throughout the years, and I never really understood the appeal - in the propaganda film it's such a plain, uninteresting design (IMO, and definitely in comparison to the Rocketeer helmet and pack).
However - that being said - I think your interpretation is
really cool.
I would agree that grey would probably show off the details better, but maybe it should be thought of in terms of which branch of the military they would have been a part of. One would immediately assume the Luftwaffe, in which case - grey. But being a kommando squad... would they be part of the SS? In which case - black.
I'd lean towards grey... and
definitely a cool squadron logo!
Great work - really looking forward to seeing the finished piece.