Windows 7 provides with quite a few default themes. It also provides some themes depending upon the location and the language you select while installing it. This theme can be obtained when you right click anywhere on your desktop and select Personalize. However other than these themes based on your location, you can also activate other themes provided to different locations. To activate these themes : Click on Start. In the Search box, type C:\Windows\Globalization\MCT A Windows Explorer window will open and show you Themes available to Australia, Great Britain, Canada, etc. Click on the them and inside the Themes folder click on the particular theme. Thus your new theme is activated.