title: Android TV :Shadow Customization
body: <p>I am working on android tv using leanback. I want visible fading shadow for highlighted item in browse fragment row item.I am getting shadow when i change the below values</p>
  
  <pre><code>&lt;dimen name="lb_material_shadow_normal_z"&gt;10dp&lt;/dimen&gt;
  &lt;dimen name="lb_material_shadow_focused_z"&gt;40dp&lt;/dimen&gt;
  &lt;dimen name="lb_material_shadow_details_z"&gt;60dp&lt;/dimen&gt;
  </code></pre>
  
  <p>But this also not giving a bright shadow.Is there any way to customize color of leanback shadow or increase the thickness of shadow.</p>
  
  <p>I need this type of shadow overlapped between row items</p>
  
  <p><a href="https://i.stack.imgur.com/nMoA7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nMoA7.png" alt="enter image description here"></a></p>