Angular Material -如何使用md-tab-nav-bar更改md-tab-link颜色？

import { MatTabsModule } from '@angular/material/tabs';
import { MatTabNavBar } from '@angular/material/tabs';
import { MatTabLink } from '@angular/material/tabs';

<mat-tab-nav-bar>
  <a mat-tab-link [active]="true" [routerLink]="['/home']">Home</a>
  <a mat-tab-link [routerLink]="['/about']">About</a>
  <a mat-tab-link [routerLink]="['/contact']">Contact</a>
</mat-tab-nav-bar>

.mat-tab-link {
  color: red; /* 设置链接的颜色 */
  background-color: yellow; /* 设置链接的背景颜色 */
}