<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style TargetType="TextBox">
        <Setter Property="Margin" Value="2" />
        <Style.Triggers>
            <DataTrigger Binding="{Binding HasChanged}" Value="True">
                <Setter Property="Background" Value="AntiqueWhite" />
                <Setter Property="Foreground" Value="Blue" />
                <Setter Property="FontWeight" Value="Bold" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</ResourceDictionary>