Not to add to any arguments, but in the final scenes of ROTS, we see that (from the inside) Vader's 'LENSES' aren't reallyVaders lenses were never red. Been always black colored since when Star Wars been around since VHS
lenses at all. They're mini TV screens. Maybe Vader sees everything like it's in a View-Master (lol). And maybe it gives him
'extra visual bandwidth', like infrared or something.
But despite this. the reality was that Prowse did have eye holes covered with lenses. But don't ever recall them ever looking red to me.
I can be convinced otherwise if someone can just show me a screengrab.