The thing is that the Blu-Ray has less of the black crush to begin with - but with the BD's too dark settings you can't really see that, but You_Too and me were able to pull a lot more detail out of the blacks, which was eaten up by compression in the DVD and HDTV broadcasts.
As to the red saturation, you're probably judging this mainly from the walls being a bit blue still but they are this way even in the GOUT, which already has a red boots, so I'm pretty sure that that's the way it should be.
To be honest, it was quite hard to decide whether to try and make the walls truly white (which I would have actually preffered) or try and stay faithful to what various references seem to point to. In the end, I decided for the latter.