Enemy tacticals/ultimates RED. Friendly tactical/ultimates BLUE or GREEN

Agreed and I think it also should apply to friendly thermite fire (like green fire) and grenades/arc stars that has been thrown by a friendly but is yet to explode should glow in green and show a green grenade indicator.  I think this actually is a very fair thing to implement to minimize the coms advantage that premades have over solos. Sometimes you dont know if its a teammates Rev Q or  an enemies and if that happened with a premade squad, you would just ask "is it your Q" and get a quick reply back.

And on the subject of color coding; I also think they must remove the player names over your teammates and replace this with a strong green outline glow around the model. I hate when I literally lose a fight only because the only thing I can see in the horizon in front of me is the letters [ UwU ] FunnyHoneyMoneyBunny.  Having teammates names on your screen fills literally no purpose since you never identify your random teammates by the names anyway.