The green is for pet health percentages.
I intended to do a melee centric one, but I'm already working on another project so I'll probably stop updating this one.
As for the mouse, eh, I'm not sure that's a problem my ui would cause. All I do is rearrange screen elements, which shouldn't impact the mouse at all.
The new 'project' of mine inherits a lot of this current UI.. but I went back and made everything look as much like the old UI as I could, because personally it was and still is my favorite. ;)
http://tru7h.org/files/classic.jpg
Just gotta iron out the few final kinks (like the hotbuttons) and I'll be done.