Nothing is more annoying than a game with asymmetrical factions that require you to be a certain color. I see no reason for them to be colored. Lords of Hellas recently did the same thing but removed the colors from the board based on ks feedback. This also gives you room to breath for expansions and new factions.
We've got you covered already
The only place where you see colored player boards is on the physical prototype. So in the videos and on the prototype image.