Wanting to create my own graphics for use in coldstone, I started off editing the default forest_base tiles and am nearly done, just a few water/grass edges more need to be drawn. My dirt tiles have a bright sandy structure, the grass has a different color and more detail, dimensions are the same as the default ones.
When I'm done with this first set of tiles (in another few days) I might upload it as an add-on, if there is enough interest.
------------------
"Get back to work, you slacker!" - Duke Nukem