原生react如何设置PickerItems，如文本颜色，fontSize等，

import React, { Component } from 'react';
import { View, Picker } from 'react-native';

render() {
  return (
    <View>
      <Picker
        selectedValue={this.state.selectedItem}
        onValueChange={(itemValue, itemIndex) => this.setState({selectedItem: itemValue})}
      >
        <Picker.Item label="Option 1" value="option1" style={styles.pickerItem} />
        <Picker.Item label="Option 2" value="option2" style={styles.pickerItem} />
        <Picker.Item label="Option 3" value="option3" style={styles.pickerItem} />
      </Picker>
    </View>
  );
}

const styles = StyleSheet.create({
  pickerItem: {
    color: 'red', // 设置文本颜色
    fontSize: 16, // 设置字体大小
  },
});