I had a PM regarding leaf color changes for SpeedTree. I figured this may be helpful to someone out there. I have not seen the way I do this mentioned in the past. However, I'm sure many of you may do it this way.
Several ways to do this, I'll show you why I don't like to use the "Apply and Generate Materials method with the Main Color". I am also not using the more complicated method of altering the leaf maps in Photoshop.
For once, I think I'm going with the most straight forward approach here...