Read original post by Karthikeyan Anbarasan at F5 Debug
In this article we are going to see how to effectively use Themes in Windows Phone 7 development. As we all know a theme is a set of resources which are used to maintain the consistent look and feel for all the controls and resources used with in the Windows Phone 7 Application. Windows Phone 7 Themes plays a major role when developing applications where colors plays an important role.