There are a number of different add-ons that will change the way your Firefox tabs look. How would you like to have one that made your tabs match your web site you are browsing. FabTabs does that.
How does it work? I’m happy you asked…
FabTabs is kind of an experimental extension for now that will color your Firefox Tabs in a way you have never seen before. By taking a small screenshot of the website you are currently viewing, and calculating the most commonly used color from that screenshot, it tries to take the 1 essential color from the website and applies it to the tab.
Sounds like a good idea. If your looking to make your tabs appear more like the pages your surfing, pick up the FabTabs add-on for Firefox.