title: Need to change foreground color of a header pivot item dynamically
body: <p>I have this:</p>
  
  <pre><code>&lt;controls:Pivot.HeaderTemplate&gt;
      &lt;DataTemplate&gt;
          &lt;ContentPresenter&gt;
               &lt;TextBlock Text="{Binding}" Foreground="{Binding}" /&gt;
          &lt;/ContentPresenter&gt;
      &lt;/DataTemplate&gt;
  &lt;/controls:Pivot.HeaderTemplate&gt;
  </code></pre>
  
  <p>But Foreground="{Binding}" is not working. How can I do that?
  Thanks!!</p>