Actually, he did. White and black, checkerboard patterns too.
In addition, artwork of his Daemons is out there too. They'd have looked like Daemonettes who starved to death mixed with alligators. He'd have also had boar things of some kind apparently. His shtick was going to be stealing Daemons from the other Chaos Gods and warping them. He himself was going to be a boar/dragon thing.