jeffwilcox/wp-thememanager — pull request #11 by rowdynl (2013-07-30 17:16:03+00:00)
Title: Background image functionality

I needed to set a background for all pages. This code alloes you to do just that.
User below code to add it.

ThemeManager.SetBackground(new Uri("Images/AppBackground.jpg", UriKind.Relative));