How to use zoom and invert colors?

If you’re looking to get more from compiz, you can use Scott Moreau’s 0.8 branch he continues to maintain up to this day. I recommend switching away from Compiz before doing so, and you are performing this at your own risk, but I wrote a fairly detailed guide explaining how to install here.

Admittedly there is outdated information in there but it’s still fairly accurate. I’ll fix it up for modern releases later.