Gord's color is effected by the emotions of those around him. This is him being red as someone around him is angry, VERY angry. His color is only effected by strong emotions, which usually effects his emotions as well because well...if someone around you is incredibly mad, there is probably something making them mad which will likely effect the way you feel as well. Also, if someone you care about is angry, you'll probably be angry too. That's why he's not only red in this drawing, but he's also angry himself.