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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Colors.xaml" />
        <ResourceDictionary Source="Windows.xaml" />
        <ResourceDictionary Source="TabControls.xaml" />
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
