GNOME Shell Magnifier Inverse (Negative) Feature

Hello, everyone.

I have recently begun to exclusively use Fedora on my desktop system. I 
am now running Fedora 16, and I was wondering if there is any way of 
testing the inverse feature of the GNOME Shell Magnifier (if it has yet 
been implemented)? I ask this because I would heavily use the Negative 
plugin for Compiz. I don't know why, but it is (and has always been) 
just so much easier for me to read when I have white text on a black 
background. It takes me a much longer time to read text when it is 
normal (black text on a white background).

I am not sure where else to look, so I figured I would post this message 
here. I am really enjoying my experience with GNOME Shell; it is working 
wonderfully for me, and I really am looking forward to using GNOME 3.4 
when it arrives!

Thansk in advance for any input, and especially for taking the time to 
read this message.

Keep up the great work!.

Take care.