[Osiris]

Opera Skin For Firefox

Version 3.6 of the Firefox web browser introduces several new design options for theme creators that are not available in previous versions of the Internet browser including the latest official release version Firefox 3.5.4. One of the first themes to make use of this new features is the Operetta theme which is available as an experimental theme from the official Mozilla Firefox website.
The Operetta theme comes in two versions, a normal and advanced version, which differ mainly in the toolbar layout. Both Operetta themes are based on the design of the Opera 10 web browser with the normal version making use of the standard toolbar layout with tabs below the other toolbars and the advanced version placing the tabbar above all other toolbars.

[Yamikotai]

Cool, I'll try this out; I also thought the default FF theme looked like arse.