By default facebook have classic blue theme, if you have greasemonkey addon installed in your firefox you can have different themes for facebook. For chrome users you don’t need to install greasemonkey addon. Just install these facebook theme scripts directly.
Userstyle.org website offers different themes for facebook. There are list of facebook themes, you just need to install them. Some facebook themes which I have tested from my browser.
Facebook – Green Colour 2010: The Skin of Facebook turns green after installing this script.
Facebook Skin - Green black 2010: If you want combination of green and black this theme looks good.
Facebook - Michael Jackson: You want Michael Jackson as your facebook theme?
Facebook - Manchester United: Are you fan of Manchester United Club? Want your favourite teams facebook theme?
Note: To work these themes in firefox ,first install Grasemonkey addon and then install these theme scripts.
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