Good effort there, Bart. A dictionary, whoda thunk!
It looks like Chris and Tom interpret it to mean simply: lots of different kinds of grasses (and grass-like plants).
It looks like Ran interprets it to mean more specifically the, well, textures, like a grain or fabric:
"This view down the par five 2nd gives a hint of the different colors and textures to come."
Note he breaks down texture into the *effect* of the different grasses: colors and textures. By Chris's and Tom's definitions, it seems like texture is an ingredient: grass variety. By Ran's definition, and I think Bart's as well, it's not the thing (grass), it's the product of the proper combination of ingredients.
Best guess is Chris and Tom have moved past thinking about the effect -- they know how to use ingredients to produce the desired effects -- but really mean the same thing as Ran.
Do they?
The OED offers a definition specific to the natural:
2. b. Any natural structure having an appearance or consistence as if woven; a tissue; a web, e.g. of a spider.
Other defs in the OED are closer to the Free but indicate the Free's definition is intended for the arts, music, etc. It seems "texture" on a golf course means more than just the interrelationship of the elements.
In which case, The Honors ain't dead yet! Except for the 10th -- is that one of the holes you meant, Bart?
For that little lost post of Rich's: "Baa! Baa! Baa!..."