message: Removed placeholderIconColor props of Picker
diff: @@ -88,8 +88,7 @@ class PickerNB extends Component {
  return React.cloneElement(this.props.iosIcon, {
  style: [{
  fontSize: 22,
  - lineHeight: 26,
  - color: this.props.placeholderIconColor
  + lineHeight: 26
  }, { ...this.props.iosIcon.props.style }]
  });
  }
  