Pretty easy, simply edit the rain enviorment's image files.
Whenever i replace rain.png with a snow.png (from another file) it goes back to rain.png whenever I start up a game.
Z0W0's user content alpha to fix this, I think
copy it and make another environment filethe launcher replaces/fixes all files that are edited..you can use Z0W0's user content alpha to fix this, I think
Lol