Changing app theme on the fly with RequestedTheme

  Windows 8.1 (and WP 8.1 XAML and Universal apps) have this new XAML markup : ThemeResource To make it short, it is like the StaticResource but with a little bit of dynamism. If you change the theme at runtime, the property will be updated. A theme is just a resource dictionary with a specific key (Valid key, for Universal Apps are “Light” and [...]