Hi HK,
hunterkiller wrote: I never understood why there are several textures whose only difference is coloring.
The main reason is convenience. If I want to make a new climate with some sort of lush grass, I find it easier to use a pre-mixed 'lush grass' texture than to start with a generic 'grass' texture and then work out the right combination of {r,g,b} modifiers to make it the right shade of green. Also, it's
slightly faster if you use a texture as-is, compared to modifying the colour during texture-map generation.
hunterkiller wrote:I'd rather see more variety though rather than consolidation because I use splatting, not single-image, so taking away some the rocks will hurt.
Fear not; I'm not planning on removing any further textures or land types from the default climates. Depending on the availability of suitable textures, I may actually add some more.
Cheers,
Aaron.