Any tips for colour grading winter/ ski film?

Hi,

I'm working on, and finalizing my last project. I have tried to mach every shot, so the blue sky, and the snow has the same color (not easy whit GoPro Here 2 shots vs Panasonic HDC-SD900).

To make this film punching and interesting for more people, I think it would be cool to ad some overall effect or Color Grading to some shots or for the hole film.

So, does any one has some tips for what effect/ grading that looks good on a ski/winter film whit fjords (water), snow, blue skies, skiing and so on?

Tanks for any tips.

If you like, I could post a preview of the film, so you can see it as it is now...