I have a simple question, but don`t know how to solve it.
I simply want to change the look of a map from dry to winter.
Yes, I know, under "view" you can choose between dry, muddy and frozen tileset.
So when I choose "frozen" everything looks fine (=frozen) .
But when I start playing the map, the ground is green and dry.

In the manual it says, changing the settings at "view" only change the layer visibility,
"you aren`t actually editing through this area".
So what do I have to do to get a "lasting" muddy or frozen look?
Thanks in advance,
Basti