I had my friend Paul King at Defiant Model Creations replace the LED with a green one, but it was still lackluster. He convinced me to let him put in two LED's, one for each eye, and now he looks much more sinister. Light bleed was a concern I had, and he took care of that as well. He also converted the button on his head into a slider switch for "always on" operation of the eyes. None of that blinking crap.