<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
    
    <ResourceDictionary.ThemeDictionaries>
        <ResourceDictionary x:Key="Default">
            <SolidColorBrush x:Key="FlyoutBorderBrush">#FF212121</SolidColorBrush>
            <SolidColorBrush x:Key="FlyoutBackgroundBrush">#FFFFFFFF</SolidColorBrush>
        </ResourceDictionary>
        <ResourceDictionary x:Key="Light">
            <SolidColorBrush x:Key="FlyoutBorderBrush">#FF212121</SolidColorBrush>
            <SolidColorBrush x:Key="FlyoutBackgroundBrush">#FFFFFFFF</SolidColorBrush>   
        </ResourceDictionary>
        <ResourceDictionary x:Key="HighContrast">
            <SolidColorBrush x:Key="FlyoutBorderBrush" Color="{ThemeResource SystemColorButtonTextColor}" />
            <SolidColorBrush x:Key="FlyoutBackgroundBrush" Color="{ThemeResource SystemColorButtonFaceColor}" />
        </ResourceDictionary>
    </ResourceDictionary.ThemeDictionaries>
</ResourceDictionary>
