People always thought Bowie had two different colored eyes, but that wasn't true. They were the same exact color. The "darker" eye was actually an illusion caused by a detached retina, which he received when he was socked in the face as a youngster. I knew a gal who had two different colored eyes, a next door neighbor who farmed in Nebraska. I learned later that two different colored eyes was historically considered to be the mark of a witch. Her name was Becky, and she was certainly beautiful and bewitching!
Getting back to David Bowie, he was in several great movies, including THE MAN WHO FELL TO EARTH, THE HUNGER, and LABYRINTH. But my personal favorites were two where he made unannounced cameos, missing agent Phillip Jeffries in David Lynch's FIRE WALK WITH ME, and one of my all time favorite movies, as Nikola Tesla in THE PRESTIGE (helping Hugh Jackman best arch-rival Christian Bale).