title: How to set UISwitch border color?
body: <p>My app has:</p>
  <pre><code>[[UIView appearance] setTintColor:[UIColor whiteColor]];
  </code></pre>
  <p>And here is what I have when <code>on</code>:</p>
  <p><a href="https://i.stack.imgur.com/h1O2y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/h1O2ym.png" alt="switch in on position" /></a></p>
  <p>and <code>off</code>:</p>
  <p><a href="https://i.stack.imgur.com/M8Y9n.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M8Y9nm.png" alt="switch in off position" /></a></p>
  <p>I need to make <code>UISwitch</code> border visible like in Settings.app:</p>
  <p><a href="https://i.stack.imgur.com/kmyfN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kmyfNm.png" alt="Settings app" /></a></p>