Don't use this one, I made it as a stop gap until I made a better one. I guess you can use it if you want, I'm not your mother.

Replaces all trees with carbon_rocks_red and nova deposits with nova stockpile graphics for better visibility.

This one is better:

http://www.voobly.com/gamemods/mod/406/SWBG-Small-Trees

It uses actual trees instead of ugly rocks.