Hm, much ado about nothing from me... I just saw this entering /exiting tunnel sequence again. It's too short sequence to even assume there are diffrent entering and exiting tunnel. Secondly there is a constantly same audio backround which suggests (at least in the finished movie) that the tunnel Luke walked trough is in the same facility/floor/room/place and therefore like, ca 20m long. Manipulating entering and exiting tunnel colours in such short sequence would only have credibility if we saw a lots of similar different tunnels before in the movie but we didn't. Adywan will probably need to find another way of dealing with this "wrong floor issue" but i'm sure he will. And if not... well, we can still enjoy the story, design and the feel can't we? :-)