Team color usage for special characters in campaigns

[fabi]

In singleplayer campaigns, most of the time the player can easily distinguish between own units and enemy ones, because they are from different factions.
It's harder to tell what units are loyal or are of some other importance.
This problem could be solved by introducing more overlay images that mark such units, but I am not a fan of them, imho they are ugly.

So I propose the usage of team color coding for that units.
Maybe some darker red for the heros, whose death leads to defeat, and some lighter red for loyal units.
The color of the unit's circle is not affected, it will stay red as used to the player.

Greetings, Fabi