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

    <Style x:Key="AbstractUICollectionTitleStyle" TargetType="TextBlock">
        <Setter Property="FontSize" Value="24"/>
    </Style>

    <Style x:Key="AbstractUICollectionSubtitleStyle" TargetType="TextBlock">
        <Setter Property="FontSize" Value="18"/>
        <Setter Property="FontWeight" Value="Light"/>
        <Setter Property="Opacity" Value="0.5"/>
    </Style>

</ResourceDictionary>