title: Is it possible to customize default Sign Up, Sign In screens of aws-amplify-react-native package?
body: <p>In order to have default auth screen, I can merely do this (<a href="https://github.com/aws-samples/aws-mobile-react-native-starter" rel="noreferrer">https://github.com/aws-samples/aws-mobile-react-native-starter</a>):</p>
  
  <pre><code>import { withAuthenticator } from 'aws-amplify-react-native';
  export default withAuthenticator(App);
  </code></pre>
  
  <p>And I get pretty ugly default out-of-the-box login screen:</p>
  
  <p>Then docs say I can't modify default, I have to create my own (<a href="https://github.com/aws-samples/aws-mobile-react-native-starter" rel="noreferrer">https://github.com/aws-samples/aws-mobile-react-native-starter</a>):</p>
  
  <blockquote>
    <p>You can either use this Higher Order Component, or build your own UI and use the APIs from Amplify too.</p>
  </blockquote>
  
  <p>But also they thay say, that I can customize default login screens (<a href="https://github.com/aws/aws-amplify/blob/master/README.md" rel="noreferrer">https://github.com/aws/aws-amplify/blob/master/README.md</a>):</p>
  
  <blockquote>
    <p>AWS Amplify will provide you customizable UI for common use cases such as user registration and login.</p>
  </blockquote>
  
  <p>Question is, can we customize default screen or we must create our own screens if we want something fancy?</p>