msfs-popout-panel-manager/WpfApp/App.xaml

<Application x:Class="MSFSPopoutPanelManager.WpfApp.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:controls="http://metro.mahapps.com/winfx/xaml/controls"
             xmlns:mah="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
             xmlns:local="clr-namespace:MSFSPopoutPanelManager.WpfApp"
             StartupUri="ApplicationWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <!-- Theme setting -->
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/Dark.Steel.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <Style BasedOn="{StaticResource MahApps.Styles.MenuItem}" TargetType="MenuItem">
                <Setter Property="FontSize" Value="14" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
                <Setter Property="controls:ControlsHelper.ContentCharacterCasing" Value="Normal"/>
                <Setter Property="Margin" Value="5, 0"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.Button}" TargetType="Button">
                <Setter Property="FontSize" Value="14" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
                <Setter Property="controls:ControlsHelper.ContentCharacterCasing" Value="Normal"/>
                <Setter Property="Height" Value="36"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.Label}" TargetType="Label">
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.TextBox}" TargetType="TextBox">
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.TextBlock}" TargetType="TextBlock">
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.CheckBox}" TargetType="CheckBox">
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.ComboBox}" TargetType="ComboBox">
                <Setter Property="Padding" Value="10, 5, 10, 5" />
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
            <Style BasedOn="{StaticResource MahApps.Styles.DataGrid}" TargetType="DataGrid">
                <Setter Property="FontSize" Value="16" />
                <Setter Property="FontFamily" Value="Segoe UI"/>
                <Setter Property="FontWeight" Value="Normal"/>
            </Style>
        </ResourceDictionary>
    </Application.Resources>
</Application>