My map has a certain style (sepia, kind of) as you can see here. I want to represent snow or just show that it's a "winter-y" area staying true to old, man-made map style. If anyone has a suggestion, I'll be happy to hear. I should be a bit more clear and say that I would rather not re-colour parts of my map, I would just like a way of showing its snowy through symbols or something that would fit in with the sort of tone I'm going for with my map. Once again thanks for the great ideas!