Ahahaha thank you, I actually own several GP-5s, along with quite a few M65s, a bunch of half-face 3M respirators and a miscellaneous assortment of other masks. The silver-lensed one that's my favorite is actually an MSA SCBA mask, not a proper gas mask (Fire-fighting surplus, damn things are like $600 new). I do love the classic look of the GP5s but they stretch out so fast and aren't otherwise adjustable (and theres the whole fucking GOST vs. NATO 40MM thread thing that makes accessories a huge pain in the ass to fit), it's a real shame.
I was really just hoping you knew of a like... idk, formal-dress gas mask? I've been wanting to pick up one of the chinese clones of the Israeli Model 4 masks that have been coming out, just haven't pulled the trigger on one yet. IDK if you have recommendations I'm genuinely interested, I have a -huge- heavy rubber collection (which I uh... seem to have never posted any of my latex? I should really fix that...)
(Incidental, but they make colored self-adhesive window tint for putting on your car! That's the best thing I've found for lenses - it's what I'm using on the one in most of my photos, and it comes in all kinds of colors)