<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:Controls="clr-namespace:MahApps.Metro.Controls">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Clean/CleanWindowButtons.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style x:Key="CleanWindowButtonCommandsStyleKey" TargetType="{x:Type Controls:WindowButtonCommands}">
        <Setter Property="DarkCloseButtonStyle" Value="{StaticResource DarkCleanWindowCloseButtonStyle}" />
        <Setter Property="LightCloseButtonStyle" Value="{StaticResource LightCleanWindowCloseButtonStyle}" />
    </Style>

</ResourceDictionary>