The dark brown on his taur-body is actually mud mixed with paint, so he's just a plain tan liontaur underneath. He is the prince of the liontaurs, and a very pampered one at that. Look at those silver claws! lol
Despite being spoiled rotten, Deego is a great and noble fighter and is a member of the royal guard and the cloth tied onto his back leg is what signifies him a member of the guard. His crown is completely for show, the gems aren't even real!