Place downloaded and custom themes that modify your site's appearance in thisdirectory to ensure clean separation from Drupal core and to facilitate safe,self-contained code updates. Contributed themes from the Drupal community maybe downloaded at http://drupal.org/project/themes.
It is safe to organize themes into subdirectories and is recommended to useDrupal's sub-theme functionality to ensure easy maintenance and upgrades.In multisite configuration, themes found in this directory are available toall sites. In addition to this directory, shared common themes may also be keptin the sites/all/themes directory and will take precedence over themes in thisdirectory. Alternatively, the sites/your_site_name/themes directory pattern maybe used to restrict themes to a specific site instance.Refer to the "Appearance" section of the README.txt in the Drupal rootdirectory for further information on theming.