Brilliant idea, SSWR. But they'd have to be REALLY split-second glimpses, enough for the brain to register what just happened, but not long enough to figure out what just happened. Would the face stay like that up until Windu's death (as in, would it be the permanent change?), or would it just be a brief flash of his Sith energy kind of taking form? If the latter, there should be a just as quick flash soon after the first one showing his regular face again. Still, seeing that in nothing but the red glow of a lightsaber blade would be incredible.

I do feel bad, this was Bob's edit and now it's turning into a wishlist-turned-reality. haha