Old Dunkelzahn is probably my second favorite character from SR. However, I'm not sure about his draconic appearance. Dunkelzahn's Will depicts a blue western dragon; Super Tuesday' cover, albeit saying "vote dunkelzahn", has an image of a golden dragon that looks more like Lofwyr.
After all - do we have any official description of Big D's looks (on novels, supplements, what have you)?
Bonus points if you can post actual OFFICIAL pics of the mass media dragon.