Last night I have seen Empire of Dreams after a long, long time (maybe even the first time since 2004). I have immediately noticed a few things about the movie clips :

Star Wars

original crawl, no "Episode 4 A New Hope"
orange/blue binary sunset scene
blue lightsaber during the training sequence
correct colors of the final shot

Empire

correct lightsabre colors
orange tint in the corridors of the cloud city

Jedi

correct lightsabre colors
original "burnt-in" Jabba subtitles
"correct" Darth Vader ending

The shots were desaturated, but their colors look just like the screenshots

from the theatrical bootlegs. Was there any official explanation, where do these shots come from ? Or any "good sounding" theory ? :)