Well, truth is, the source I got these from had more subdued colors for the grasses and other land features. I wonder if they were just trying to make the contrast noticeable for the wet season. Picture these on the Serengeti. Perhaps I'll have to put a grass pack to go along with these so you can create an ecosystem that truly feels foreign.
I also had to double the size of the graphics so they'd be the right size for UO...you can probably see how they're pixelated a bit. I didn't want to touch them up because I know where my skills are and that's not one of them...unless I have no other choice.
