One advantage Opera has over its bigger competitors is the ability to change the interface of the Opera browser. The Opera skins page (http://my.opera.com/customize/skins) has hundreds of skins that you can download for free. After you download the skin, you can use it by right-clicking the Main bar and highlighting 'Skin' in the context menu. Select the skin you want from the list at the bottom of the menu. All skins that you download from the Opera Skins page should automatically show up in this menu.