Also give every manned AA gun a different color puff like the japs did
I recall asking for that when I first started playing the 88. It was shot down, I was told multiple times it wasn't realistic. Even if it was realistic, I don't think I would go for it. #1 Would make using and identifying your 88 round (explosion) too easy, takes 1/2 the challenge away. #2 In any war film I've seen it wasn't a sky full of rainbows, it was black. Not attacking you, but I think it should just stay the way it is considering Gun Ship or Field "anti-air" 'puffs', including 5in.
I am all for the multi colored tracers, due to having seen them in documentaries. However, I have yet to see any showing colored puffs, and again, even if they did, I think it would make it too easy to use the 88/5in, and it's already easy enough.