I don't know whether it was a deliberate change or just different scanning setup. I mean I am not an expert of digitalisation process but the fact is that different conditions will most definitely produce different colours. Or alternatively, the digitalised footage was post-proccesed by shifting the overall hue.

As I said, film stock is far from perfect. The director might have set the lighting of the set the way he wanted but the colours captured on the film stock did not reflect the reality as perceived by the human eye. In fact, looking at the two screenshot you provided, I would easily concluded that the Blu-Ray colours look way more natural. But that's subjective of course.

There is another interesting thing. It seems humans are very poor at memorising the actual overall hue of the footage seen. If I did not make the explicit comparison between let's say DVD and Blu-Ray shots, i.e. only using my memory of DVD version as a reference when watching Blu-Ray version, I could have never noticed the difference in the colours.