Shakespeare gave Caesor the fictional final words, "et tu, Bruté" (and you, Brutus?). I've always felt the words, and the betrayal Caesor felt at that moment, when his friend (and others) were murdering him. So of course I had to grab and cheapen them, and use them in a computer game. ;)
His original costume had a hood over his head, with a minimal mask around the periphery of his face. The mask was colored purple, traditionally associated with royalty and nobility. You can see I kept the purple idea going in his helmet's feathers. Once he completed Imperious' Task Force and earned the right to wear ancient Roman armor, he switched.
The problem with Dark Armor is that, whatever your costume may be, it does not matter. You start fading into darkness with your early armors, and when you get Cloak of Darkness (usually at level 20), your look becomes nothing more than a dark, cloudy splotch. Obviously these pictures were taken with his armors off. (I learned after writing this that the game's character customization feature would have allowed him to lessen the cloudiness of dark armor. <sigh>)