I agree with DE that de-saturation should not be taken to extremes. Looking at 70mm film scans you can see that there was a lot of natural colour and life in the film originally, and making it look too black and white in an effort to get rid of the artificial photoshopped look isn't really much of an improvement. Dialing down extremes of blue casting is definitely important, but certain things like the Death Star already did have a bit of a light blueness to them originally, and that shouldn't be completely removed. Oversaturated reds are often seen throughout the '04 version as well, and are in some need of adjustment, but again extreme measures need not be taken.