title: Custom UITableViewCell with drawRect + normal blue selection
body: <p>I have a custom UITableViewCell. All the drawing is done in the drawRect: method and no subviews are added.
  The drawing works fine and the scroll speed is good.
  But the problem is with the selected cells. I want the selection to behave like it would normally:</p>
  
  <ul>
  <li>Blue gradient selection color</li>
  <li>Inverted text color</li>
  <li>Animated deselection</li>
  </ul>
  
  <p>I have not been able to achieve all three.</p>
  
  <p><strong>First attempt:</strong><br>
  Set selectionStyle = UITableViewCellSelectionStyleNone and do the selection color in the drawRect method.
  With this method, I am able to achieve the first two things, but the deselection is instant. So one second it is selected blue, the next second it is deselected. I do not get the nice fade-out.</p>
  
  <p><strong>Second attempt:</strong><br>
  selectionStyle = UITableViewCellSelectionStyleBlue
  With this method my cell is all gradient blue when selected. The text I have is not visible. The fade-out works nicely, though.</p>
  
  <p><strong>Third attempt:</strong><br>
  Set selectionStyle = UITableViewCellSelectionStyleBlue and also set selectedBackgroundView to a UIView where I set the backgroundColor to a transparent blue.
  Here the problem is that the selectedBackgroundView (despite the name) is drawn on top of my normal content. So if the selectedBackgroundView is not transparent, I cannot see the text. And if it is transparent, I can see the text, but the selection color gets "faded" and does not look right.</p>
  
  <p><strong>What would be the correct way of achieving all three bullet points?</strong></p>