The Grimwrath Berzerker gets the same slate chip base as other characters to give him a bit of separation from the rank and file dwarves that he may be hanging out with. I wasn’t feeling very adventurous with the hair, so the rest of the paint scheme is pretty pedestrian.
In game I love this guy. He gets to attack twice if he kills enough and rolls well enough the first time. The only problem is that he tends to clear the models around him, so I have a hard time consolidating into more enemies.