I have a collection of classes together in a tree. The whole collection is bound to a TreeView. One of the classes has a bool property on called IsChanged:

public class ReportColumn
{
    public string ColumnName { get; set; }
    public object OriginalValue { get; set; }
    public object ChangedValue { get; set; }
    public bool IsChanged { get; set; }
}

In my XAML I created a DataTemplate for it:

<DataTemplate DataType="{x:Type local:ReportColumn}"
    <StackPanel Orientation="Horizontal"

        <!-- Column Name --
        <TextBlock Margin="0,0,5,0" 
                    FontWeight="Bold"Name:</TextBlock
        <TextBlock Text="{Binding Path=ColumnName}"</TextBlock

        <!-- Original Value --
        <TextBlock Margin="20,0,5,0" 
                    FontWeight="Bold"Original:</TextBlock
        <TextBlock Text="{Binding Path=OriginalValue}"</TextBlock

        <!-- Changed Value --
        <TextBlock Margin="20,0,5,0" 
                    FontWeight="Bold"Change:</TextBlock
        <TextBlock Text="{Binding Path=ChangedValue}"</TextBlock

    </StackPanel
</DataTemplate

Then the whole thing is bound to the treeview. What I'd like is to make this node's foreground red when IsChanged is true. Can someone explain how to do this?