title: White flickering when transitioning to a new screen and the background is a dark color?
body: <p>I am experiencing this when transitioning to one screen to another with two different navigators: ex-navigation and the new one React Navigation
  . There is a white flickering for a second (or half a second). Looking for a solution I found that other navigators have the same problem. For example the navigator from wix 
  <a href="https://github.com/wix/react-native-navigation/issues/14" rel="nofollow noreferrer">HERE</a>. From the link:</p>
  
  <blockquote>
    <p>Ok, the problem is, that React styles applies after the navigation
    started, and by default the backgroundColor is white, so this is the
    flicker effect..</p>
  </blockquote>
  
  <p>Someone having the same issue?</p>