如何在ionic 4中更改弹出窗口中按钮文本的颜色

// 自定义弹出窗口按钮文本颜色
.my-custom-popup-button {
  color: red; // 这里可以替换为你想要的颜色值
}

import { Component } from '@angular/core';
import { AlertController } from '@ionic/angular';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {

  constructor(private alertController: AlertController) {}

  async presentAlert() {
    const alert = await this.alertController.create({
      header: 'Alert',
      message: 'This is an alert message.',
      buttons: [
        {
          text: 'Cancel',
          role: 'cancel',
          cssClass: 'my-custom-popup-button', // 添加自定义的CSS类名
          handler: () => {
            console.log('Cancel clicked');
          }
        },
        {
          text: 'Okay',
          cssClass: 'my-custom-popup-button', // 添加自定义的CSS类名
          handler: () => {
            console.log('Okay clicked');
          }
        }
      ]
    });

    await alert.present();
  }

}