Themes

Themes allow you to change the look and feel of the user interface and personalize it to your tastes. A theme can simply change the colors of the UI or it can change every aspect of its appearance.

Halloween
A special theme for Hallowe'en by Goodydino (originally Ed Hume).
Photonic
The Quantum "Photon" theme beamed at the XUL.
Synergy
The official Slender Studios XUL theme for Basilisk