title: Change view in all collection view cells
body: <p>I have a collection view where each cell has a video (played through AVPlayer) and a red circle. When a button in the view controller is clicked, the color of all cell's circles should be changed to blue, and then if clicked again, changes it back to red.</p>
  
  <p>So what I need to be able to do is: when the button is clicked in the controller view, change the circle view in all cells, visible or not. The reason I say visible or not is because I only show one cell on the screen at a time. The user swipes to go to the next cell.</p>
  
  <p>I have already tried using <code>reloadData()</code> to update all cell's circles when the button is clicked, however, the problem I discovered is that the video resets back to the beginning (and I need it not to do that, not just for the visible cell, but for all cells).</p>
  
  <p>What are my other options?</p>