title: WPF TabItem Background color when selected?
body: <p>Any clue on why the code bellow does not work ?
  I'm trying to set the background color of a tab item when selected to red.  </p>
  
  <pre><code>  &lt;Style x:Key="TabItemStyle" TargetType="{x:Type TabItem}"&gt;
          &lt;Setter Property="Background" Value="White"/&gt;
          &lt;Style.Triggers&gt;
              &lt;Trigger Property="IsSelected"    Value="True"&gt;
                  &lt;Setter Property="Background" Value="Red"/&gt;
              &lt;/Trigger&gt;
          &lt;/Style.Triggers&gt;
      &lt;/Style&gt;
  </code></pre>
  
  <p>Regards,
  MadSeb</p>