Basic idea about UAC virtualization
http://windowsteamblog.com/windows/b/developers/archive/2009/08/04/user-account-control-data-redirection.aspx
The way to make the application UAC aware
http://blogs.technet.com/b/mrsnrub/archive/2010/08/11/uac-virtualization-allowing-standard-users-to-update-a-system-protected-area.aspx
Soon, we'll be updating the look and feel of this theme. Read about the changes here. You can easily turn off this notification in the theme customization panel.