title: Change GridViewColumn header color
body: <p>I have this ListView:</p>
  
  <pre><code>&lt;ListView  Name="lvFiles" Background="Transparent" BorderThickness="0"&gt;
      &lt;ListView.View&gt;
          &lt;GridView&gt;
              &lt;GridViewColumn Header="File name" /&gt;
              &lt;GridViewColumn Header="Size" Width="50" /&gt;
          &lt;/GridView&gt;
      &lt;/ListView.View&gt;
  &lt;/ListView&gt;
  </code></pre>
  
  <p>How can i set the Header color ?</p>