By the way, I'd like to go ahead and show you guys how I'll be showing areas being conquered in a war. It's very much going to be done in Europa Universalis fashion.Poor eemmtt, he never stood a chance against those not-zombie birdmen.
Thick lines on the territory layer would indicate lands that have been conquered during the course of a war. If they are granted to the conquering realm in a peace treaty or by the total capitulation / domination of the enemy state, that territory becomes the color of the conquerors.