The default Ambiance theme in Ubuntu 10.10 – and its lighter sibling Radiance – have received lots of due love and attention since Lucid and thusly many third-party browser “themes” have also been pepped up in anticipation.
Chrome in Ubuntu 10.10 using the SWOriginal's themes
The author has also created a Firefox Persona ready for users to apply, too. You can try it out before installing by directing your Firefox browser to getpersonas.com/en-US/persona/297448
SWOriginal's Radiance Firefox Persona for Maverick users
KyleBaker has long been mentioned here on OMG! Ubuntu! for his fantastic Ambiance and Radiance Opera skins.
He’s wasted no-time in making them Maverick ready either, and both can be installed @kyleabaker.com/2010/05/26/ambiance-skin-and-speed-dial-backgrounds/
Kyle Baker's revamped Radiance theme for Opera in Ubuntu 10.10