VisualBrush color not changing when selected - wpf

Question

I've created a VisualBrush in WPF to give me a wavy underline for a character.
<VisualBrush x:Key="WavyBrush">
<VisualBrush.Visual>
<Path Data="M 0,2 L 2,0 4,2 6,0 8,2 10,0 12,2" Stroke="Black" />
</VisualBrush.Visual>
</VisualBrush>
It works great except when I put the result in a DataGrid and select the row. If an unselected row has black text with white background and selecting the row turns the text white, (and the background blue or some other color) my VisualBrush with Stroke="Black" stays black, doesn't go white and looks confusing.
Is there a way to get the brush to act like color of text?

Answer 1

You can use DataTrigger to change the color of the brush when the row is selected. The code uses ListBox but you could easily adapt it to use DataGrid.
<Window.Resources>
<VisualBrush x:Key="WavyBrush">
<VisualBrush.Visual>
<Path Data="M 0,2 L 2,0 4,2 6,0 8,2 10,0 12,2" Stroke="Black" />
</VisualBrush.Visual>
</VisualBrush>
<VisualBrush x:Key="whiteWavyBrush">
<VisualBrush.Visual>
<Path Data="M 0,2 L 2,0 4,2 6,0 8,2 10,0 12,2" Stroke="White" />
</VisualBrush.Visual>
</VisualBrush>
</Window.Resources>
<Grid>
<ListBox ItemsSource="{Binding}">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="50" Width="350">
<Border x:Name="border" Width="350" Height="10" VerticalAlignment="Bottom" Background="{StaticResource WavyBrush}">
</Border>
</Grid>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}},Path=IsSelected}" Value="True">
<Setter TargetName="border" Property="Background" Value="{StaticResource whiteWavyBrush}" />
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>

Answer 2

If anyone else is interested, the DrawingBrush acts like text and changes color when selected.
<DrawingBrush x:Key="TextBoxWavyBrush">
<DrawingBrush.Drawing>
<DrawingGroup>
<DrawingGroup.Children>
<GeometryDrawing Geometry="M 0,2 L 2,0 4,2 6,0 8,2 10,0 12,2">
<GeometryDrawing.Pen>
<Pen Thickness="1" StartLineCap="Round" EndLineCap="Round" LineJoin="Round" Brush="{Binding RelativeSource={RelativeSource AncestorType=TextBox, Mode=FindAncestor}, Path=Foreground}"/>
</GeometryDrawing.Pen>
</GeometryDrawing>
</DrawingGroup.Children>
</DrawingGroup>
</DrawingBrush.Drawing>
</DrawingBrush>