Personas Plus: Instantly spice up the way Firefox looks
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If you want total control over how the overall interface of Firefox looks, then Personas Plus for Firefox is the extension for you. Personas Plus gives you much more control over how Firefox looks, making it easy to change themes with over 50 options to choose from. It is so good that Mozilla has decided to include it as a standard feature in the latest release of Firefox 3.6.
When Personas Plus is installed in your add-ons, you'll see a small button in the lower left corner of your browser window. Every time you want to apply a new theme to Firefox, simply click on this button and select it from the context menu. There are about fifty themes to choose from, divided into categories such as Firefox, Holidays, Nature, Scenery, Sports, etc., to help you find something that fits your current mood.
However, it is worth noting that some of the themes may not be very practical. Some of them are elaborately designed, which can make reading the menu bars a bit tricky. Additionally, the themes only change the main window's appearance, while icons and other menus remain the same default Firefox design.
Overall, Personas Plus is a great extension that allows you to easily customize the look of Firefox with a wide range of themes to choose from. It says something about Personas Plus that Mozilla has decided to integrate it as a standard feature in Firefox 3.6. Give it a try and instantly spice up the way Firefox looks.