如何更改UINavigationBar按钮项目上的文本颜色

import UIKit

override func viewDidLoad() {
    super.viewDidLoad()

    // 创建一个UIBarButtonItem
    let barButton = UIBarButtonItem(title: "按钮", style: .plain, target: self, action: #selector(buttonTapped))
    
    // 设置按钮的文本颜色
    barButton.setTitleTextAttributes([.foregroundColor: UIColor.red], for: .normal)
    
    // 将按钮添加到导航栏
    navigationItem.rightBarButtonItem = barButton
}

@objc func buttonTapped() {
    print("按钮被点击了")
}