I was wondering if it is possible for the coloring of a light to affect the terrain in a map. I ask because in Zeroeditor the directional light I added gave the terrain a nice orange color, but in game the color only affected the units and objects. I went back into Zeroeditor and tried playing around with the ambient light settings on the right side of the screen to no effect. So, is it possible to do what I'm trying to, or will I just need to use the color function in Zeroeditor to give the illusion that the terrain is affected?

Burn the terrain. In the "Image" tab I believe, up in the top right. Click "Burn Terrain."

Ok, I had been under the impression that the burn function only burned shadows of objects into the terrain.

What exactly does the burn terrain do?

Burns generic shadows for things like trees (to save memory in-game) and applies a little bit of the lighting into the terrain.