message: Passed x and y of selected colour to detail
diff: import React from 'react';
  -import {StyleSheet, ScrollView, Text, View, TouchableHighlight} from 'react-native';
  +import {StyleSheet, ScrollView, Text, View,
  + TouchableHighlight, findNodeHandle, UIManager} from 'react-native';
  const colors = ['maroon', 'red', 'crimson', 'orange', 'brown',
  'sienna', 'olive', 'purple', 'fuchsia', 'indigo',
  @@ -12,13 +13,16 @@ export default ({stateNavigator}) => (
  {colors.map(color => (
  <TouchableHighlight
  key={color}
  + ref={el => this.el = el}
  style={[
  {backgroundColor: color},
  styles.color
  ]}
  underlayColor={color}
  onPress={() => {
  - stateNavigator.navigate('detail', {color: color});
  + UIManager.measureInWindow(findNodeHandle(this.el), (x, y) => {
  + stateNavigator.navigate('detail', {x, y, color});
  + });
  }}>
  <Text></Text>
  </TouchableHighlight>
  