“A project for sharing XAML based resources for creating consistent Windows Phone 7 user experiences. The templates are based on theUI Design and Interaction Guide for Windows Phone 7. With these templates you can easily create common Windows Phone UI layouts by simply copying and pasting the desired page. We’ve taken care of the margins, styling, and custom controls that may not be available in the platform.”
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http://wp7designtemplates.codeplex.com/