hmm... Being simply a user of G-Force and always just letting it ride, so to speak, I've never messed with custom configs, color maps, or even ran the toolbar! believe it or not...
The shot definately looks cool, though...
Speaking of "cool." I recently updated G-Force to the new 3.5.1 (upgraded my Platinum key, too). A few days ago, I noticed a background image (a moon surface or something similar) below the normal viz stuff. The affect was really cool.

This is probably nothing new to most, though...