title: How can I turn the MKMapView for dark mode?
body: <p>How can I change the map to dark mode from <strong>iOS 13</strong>?</p>
  <p>I have opt-out from UserInterfaceStyle so system-wide colors will not apply to me, so I'll do it manually.</p>
  <p>I've seen this video from apple <a href="https://developer.apple.com/videos/play/wwdc2019/236/" rel="nofollow noreferrer">WWDC2019 - Session 236, at 8:19s</a> but that's for snapshots and I didn't get it.</p>
  <p>Actually I was trying something like:</p>
  <pre><code>private var mapView: MKMapView!
  
  override func viewDidLoad() {
      super.viewDidLoad()
      mapView.backgroundColor = .black       
  }
  </code></pre>
  <p>but it doesn't change the theme or appearance or the traitCollection to dark.</p>
  <p>Any suggestion?</p>