message: Set large title on zoom colors scene
diff: import React from 'react';
  import {StyleSheet, ScrollView, View, TouchableHighlight} from 'react-native';
  import {NavigationContext} from 'navigation-react';
  -import {SharedElementAndroid, SearchBarIOS} from 'navigation-react-native';
  +import {SharedElementAndroid, NavigationBarIOS, SearchBarIOS} from 'navigation-react-native';
  const Colors = ({colors, children}) => (
  <NavigationContext.Consumer>
  @@ -43,6 +43,7 @@ export default class Grid extends React.Component {
  ));
  return (
  <Colors colors={colors}>
  + <NavigationBarIOS largeTitle={true}>
  <SearchBarIOS
  text={text}
  autoCapitalize="none"
  @@ -50,6 +51,7 @@ export default class Grid extends React.Component {
  onChangeText={text => this.setState({text})}>
  <Colors colors={matchedColors} />
  </SearchBarIOS>
  + </NavigationBarIOS>
  </Colors>
  );
  }
  