Walnut2, based on icons from art.gnome.org. Includes support for help, inspector, downloadstatusbar, downloadmgr, calendar, quicknote, offline, toolbarext. and many other extensions. Install "About Home Themer" to also theme the about:home page.
Utopia theme, now with 16 different backgrounds and an Options extension to configure the theme!
A lightweight theme for Firefox 4.0+ based on Mozilla Phoenix.
Varying shades of blue with arctic ice effects.
It will integrate with most extensions by default.
Collections are groups of related add-ons that anyone can create and share.Explore Collections