Yep, some good memories there! Thanks for digging it out. Did Bowie actually have one large & one small pupil, or was is film trickery?
It was bugging me so I googled it:
The unusual appearance of Bowie’s eyes were due to a condition called anisocoria. Anisocoria is a condition characterised by an unequal size in a person’s pupils. In Bowie’s case, his left pupil was permanently dilated.
This can create the illusion of having different coloured eyes because the fixed pupil does not respond to changes in light, while the right pupil does. So Bowie’s left eye often appeared to be quite dark, due to the blackness of his dilated pupil, when compared to the blue of his right iris.