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About this Add-on
If you have no theme installed, this extension is of no use.
And the functionality has been improved, which provide menu items in firefox Tools menu that has 2 functionalities:
(1) Option menu shortcut button
(2) "Theme Shuffle!" button ~ allow you to switch theme without losing your old firefox session. Shortcut key "shift+S" is provided, so that you can randomly switch themes in a much faster manner.