Well, on the photos I have seen the camouflage is definetely grey, no wonder as they are B&W.
Seriously, the few ones I have at hand, show that the film/filter combination used was completely not yellow sensitive and this may have resulted with weird 71/02 presentation on B&W film. Still, I would love to see any evidence for this and other 'experimental' schemes and I do not mean B&W photos.
Cheers