BuildFeed/Mobile/BuildFeedApp-Full/App.xaml

<Application
    x:Class="BuildFeedApp.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:BuildFeedApp"
    RequestedTheme="Dark">

</Application>