I run games in single player with only AI from time to time, including a lot of team games. It would be easier to follow quickly and look a little nicer if the teams were organized around a certain color scheme: For example, a team with orange/yellow/red, and a team with blue/green, or purple/red, or some other combinations. In addition, when you have a game and invite a lot of AIs but say, have one real player per team, the AI color scheme could match that of the player.

You can change the colours of other players/AI's for yourself