[WIP] Ground texture mod

[philip.ed]

Ali, how is the terrain coming along? I was looking back over pictures of the CoD terrain, and I noticed that there seem to be a lot of fields which are either really dark or almost pastel in colour. It seems to be that, from photos I've seen (indeed, from mostly all the photos posted in the thread) that such variations are 'rare', as in that they don't appear as often as in CoD.
Is it possible to edit the actual textures in this way, to really alter to way the terrain looks?