SooperDoode

GNOME Firefox Theme alters Firefox interface, giving you control to change its skin. Compatible with Firefox 2.0 or later.

Tangerine Firefox Theme is a skin that changes the interface of Firefox to a lively tangerine color. It requires Firefox 2.0 or later.

Tango Firefox Theme is a Firefox add-on that applies a Tango skin to the browser's interface, allowing quick and easy customization. It requires Firefox 2.0 or later to operate.