MARKUS

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

                    xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"

                    xmlns:system="clr-namespace:System;assembly=mscorlib"

                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <ResourceDictionary.MergedDictionaries>

        <ResourceDictionary Source="/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml" />

        <ResourceDictionary Source="/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />

        <ResourceDictionary Source="/MaterialDesignThemes.Wpf;component/Themes/generic.xaml" />

        <ResourceDictionary Source="/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />

        <ResourceDictionary Source="/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Purple.xaml" />

    </ResourceDictionary.MergedDictionaries>

</ResourceDictionary>