As for matching the current river rocks, I don't want to do that because that is a terrible point of reference to begin with imo. It's all green and bland. If Emote insists that this needs to be changed, he's free to do it.
Hey Tham and everyone, love the new terrain/texture stuff going on in this thread. Just to throw in my two cents, I do agree with the notion that the new textures for the terrain sets should match the old ones in style/color somewhat (change is good, but the right kind of change is what we're after!). I don't see why we have to go for a drastic change in style when we can slightly change the tone for the better. As an example, I'd probably have to redo a lot of Middlebury rock formations if the color/tone changed too drastically (yes I am trying to save my own hide). I'm happy to redo stuff, but I wouldn't want to redo it for just the pure sake of it, and we have good rock formations already that could fit perfectly with new textures.
Anyway, check out Middlebury if you have the time to see how I mix in the river rock into the landscape, as well as the stormlands terrain sets too. I thought I have a few cool areas that show off the old textures not looking too obnoxious. Lemme know ingame if you want me to show you too.
Going off the pic Emot shared above of the river rock terrain set in the mossyboulder schem, I do think the river terrain set should maybe stay a little greener and have more of its tones shy away from the red color shone above and more into mossy unsaturated colors. Maybe add a little unsaturated greenish white into the stone or make the red color a little more unsaturated so it seems lighter and less red colored.
Here's a reference image to what I'm suggesting in style: These rocks are from the Smoky Mountains where I live around North Carolina and admittedly I'm being biased, but this is how I kind of pictured the river rocks for awhile and I think they should stay somewhat similar in overall color and style.