Avisynth histograms may be able to take care of this...
but let's not pretend the pre BD had excellent colors either :P In fact that gives me an idea... I wonder what it would look like if I were to apply a histogram to the blue ray video to try to get it to match a histogram of the original star wars trilogy GOUT? Hmmm. I'd obviously have to bump the saturation back up a bit if I did that since the gout is a little washed out, but the color that's left is far more natural.