Neut: Yes i am aware that it is blue but when a nuklear bomb detonates it looks more like a weird plasma explosion instead of a real red/yellowisch nuke i think when it gets high temparature maybe 4000°C it would turn red/yellowish randomly.
Smoke/Water: Well i think when they are very hot that some bit of more colour wouldn't hurt maybe for smoke 2500°C Temparature and Water steam 3200°C Temparature.
I like this, it's just like the COAL update, a nice visual effect that also increases realism without losing touch with the fact that this is a Particle Sim. not a RL physics Sim. So plus one from me.
Maybe the color change for NEUT could be turned on/off. I like having blue neutrons but orange neutrons would definitely be more realistic for a nuclear bomb. Maybe neutrons should first change color and then become photons.