Ironically I just got back from a vacation to San Francisco and I toured the ww2 submarine there. You’re right! One of the things the audio tour said was that the subs were very hot and that the crew were often just in shorts, tshirts and slippers. Modern subs probably have lots of a/c , but the fishnet shirts were probably a nod to the old days. Now, as to the purple hair on moon base?….I don't know what subs are like now, but from what I heard, subs were often hot and humid places. So fishnet does make sense!And it looks cool. You'll never get me to admit those UFO costumes were bad. I loved almost everything about UFO.