How to Customize Firefox 4 Appearance ? Apart from using Firefox 4 Themes, here is nice Add-on to fully customize the Firefox 4 user interface by styling App Menu Button, input Buttons,all the icons,and Tab Color. Stratiform is an add-on for Firefox 4,  allows the users to tweak Firefox 4 appearance settings to the maximum level. The extension also customizes the theme, allowing users to enable toolbar styles, which...