title: How to properly DEselect an item on RecyclerView?
body: <p>I followed this answer:
  <a href="https://stackoverflow.com/a/30046476/8793443">https://stackoverflow.com/a/30046476/8793443</a>
  and got it to work: only one item is selected at a time (which is what I want).</p>
  
  <p>However, when the same item is clicked for a second time, it remains selected. How can I deselect it so that it goes back to it's original color background?</p>
  
  <p>Any help is appreciated.
  Thanks!</p>