There is no 3D change to any tiles. I only painted about 15 textures. The rest are basically varients of those and require some crafty cut n' paste. I was mainly concerned about the colors and spent a long time getting it to look pretty. The textures are really dark in photoshop because the game lights them so brightly. Then all the distant tiles need to be done, which is a matter of time, not creative energy.
However, a terrain texture set is low priority to me and always will be. I have a LOT of airplanes to build. So I can lend these files to any terrain painters that want to finish it under my approval. The files are in layers in Photoshop format.