<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="SystemColors.xaml" />
        <ResourceDictionary Source="/ThemeResources/Light.xaml" />
        <ResourceDictionary Source="/ControlsResources.xaml" />
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>