Custom Shadows/Ground Textures?

Is there anyway, whatsoever, to create custom shadows and ground textures? I need to find out a way because, in my campaign, I scaled all my structures to 1.5 for realism purposes. Please help, I'm a n00b... Thanks.

Pic: http://img457.imageshack.us/img457/3...undtexttv2.jpg

Both, shadow textures and the textures under buildings (they are called ubersplats) can be selected in the unit editor.
Creating a custom shadow/splat texture is like creating any other texture.
If you don't want to replace existing splats you can also add new entries to UberSplatData.slk.

On a side note, the units on the screenshot look horrible. Maybe it's because of the shadow and ground textures.