title: How to style the standard react-native android picker?
body: <p>I am unable to style it. There is hardly any documentation on this. I want to know how to set the fontFamily. How to set the background color on the Picker.items? </p>
  
  <p><a href="https://facebook.github.io/react-native/docs/picker.html" rel="noreferrer">https://facebook.github.io/react-native/docs/picker.html</a></p>
  
  <p>Setting fontFamily or background color doesn't work. wrapping it up in a View and giving style attributes to View also doesn't work.</p>
  
  <pre><code>&lt;Picker
     style={styles.picker} // cannot set fontFamily here
     selectedValue={this.state.selected2}
     onValueChange={this.onValueChange.bind(this, 'selected2')}
     mode="dropdown"&gt;
     &lt;Item label="hello" value="key0" /&gt; // cannot set backgroundColor here
     &lt;Item label="world" value="key1" /&gt;
  &lt;/Picker&gt;
  </code></pre>