message: Added back tint colors for ios
diff: @@ -38,6 +38,9 @@ class TabBar extends React.Component<any, any> {
  this.setState({selectedTab: nativeEvent.tab})
  }}
  selectedTab={this.state.selectedTab}
  + barTintColor={barTintColor}
  + selectedTintColor={selectedTintColor}
  + unselectedTintColor={unselectedTintColor}
  style={styles.tabBar}>
  <BackButton onPress={this.handleBack} />
  {tabBarItems
  