This is a bit of a cheat. You do have better sight when doing this.
Open Think Tanks game/data/terrains/FTerrain folder. You will also see Blue and Red terrain folders. Inside FTerrain folder You will see FTerrain01 through FTerrain04. Simply rename these lush terrains BlueTerrain01 to 04 or RedTerrain01 to 04 and put them in the Blue and Red folders. (Make sure spelling is exact!)
BUT!! before doing this open each the RedTerrain and BlueTerrain folders and right click anywhere and make a "new folder". copy and paste your stock terrains inside this new folder ( the 4 blue and 4 red) so you can revert back to stock when you want. After you know you have them pasted you can go ahead and delete them.
All your doing is renaming pictures and tricking the game a bit.
