While I prefer the prior clip (with the more whitish snow and heavier on the gray end of the spectrum to show nightfall), one must keep in mind that snow is still water. Being that the sky is blue due to light being refracted through various molecules (water being a chief component, or H2O), snow, while white especially during daytime as it reflects ALL colors (due to sunlight hitting it directly), at night it will reflect the same color as water does during the day - which is blue (short of other light sources reflecting off of it, such as street lamps and the like).

Of course, I could be completely wrong. I suggest those members who live in northern areas or are experiencing snowfall to simply go outside (away from street lights) to photograph some night shots, like these:

It appears that even if there is a bluish tint, it would still skew more towards the grey end of the spectrum (per the second picture).

Now this is still STAR WARS, so visual "coolness" or perception can mean more than reality, so in the end it really comes down to what looks the best to the human eye.