title: How do you change the style of the ListView column reorder separator indicator?
body: <p>How do you change the style of the ListView column reorder separator indicator? (The blue line that appears when you try to reorder a column, pictured below)</p>
  
  <p><img src="https://i.stack.imgur.com/u1Mwe.png" alt="enter image description here"></p>
  
  <p>The following oddly only changes the height :</p>
  
  <pre><code>&lt;ListView&gt;
      &lt;ListView.Resources&gt;
          &lt;Style TargetType="{x:Type Separator}"&gt;
              &lt;Setter Property="Height"
                      Value="5" /&gt;
              &lt;Setter Property="Foreground"
                      Value="Red" /&gt;
              &lt;Setter Property="Background"
                      Value="Red" /&gt;
          &lt;/Style&gt;
      &lt;/ListView.Resources&gt;
      &lt;ListView.View&gt;
          &lt;GridView &gt;
              &lt;GridViewColumn Header="First Name"
                              Width="100" /&gt;
              &lt;GridViewColumn Header="Last Name"
                              Width="100" /&gt;
          &lt;/GridView&gt;
      &lt;/ListView.View&gt;
  &lt;/ListView&gt;
  </code></pre>
  
  <p>I've tried a bunch of things, including </p>
  
  <ul>
  <li>Setting the SeparatorStyleKey (Toolbar, MenuItem, StatusBar)</li>
  <li>Overriding SystemColors</li>
  </ul>
  
  <p>but no luck.</p>