Oh, yeah, most old home video releases were undersatured with unnaturally boosted reds.
As for Grindhouse, the point there is that the print was faded and so it had to go through color correction and they had no good reference, so they had to do it by eye and just decided to make snow white, which all evidence points to that it wasn’t in the original ESB prints.
Also, when a snowy landscape is dark, it does usually appear bluish, even in real life.
Interesting photo, which almost leaves it just as unresolved because it does show some blue lighting but the main carcass snow is perfectly white:
http://dimmerlightstudios.com/screens_med/tfu/e5s_bts_48_r.jpg
I respect your decision sir, I had to at least try! 😉