1. hitting his head after falling out of a tree turned his hair blue
2. murdoc crashing into the music store gave him his first 8 ball fracture (black eye). probably lost some teeth then too. oh, it also put him in a coma.
3. flying through murdoc’s windshield gave him the second eye, and aroused him from his coma.
tada! stuart tusspot is now 2D, for two dents, like the ones in his head that give his eyes their color.