title: Customize fastScrollOverlay?
body: <p>I'm trying to customize the letter popup that appears during scroll. I was able to change it's colors and the position from my styles, but I need to make the text and the whole element bigger as well as move it closer to the vertical center of the screen. Is any of these things possible? How can I do them?</p>
  
  <p>This is my current code from my style.xml file:</p>
  
  <pre><code>    &lt;item name="android:fastScrollOverlayPosition"&gt;floating&lt;/item&gt;
      &lt;item name="android:fastScrollTextColor"&gt;#000000&lt;/item&gt;
      &lt;item name="android:fastScrollPreviewBackgroundLeft"&gt;@drawable/square&lt;/item&gt;
      &lt;item name="android:fastScrollPreviewBackgroundRight"&gt;@drawable/square&lt;/item&gt;
  </code></pre>