title: How do I change the color of md-tab-header?
body: <p>Is there a way to change the color of <code>md-tab</code>'s header to yellow?</p>
  
  <p>I tried the following code but it does not work:</p>
  
  <pre class="lang-css prettyprint-override"><code>.mat-tab-label.mat-tab-ripple {
     background-color: red;
  }
  </code></pre>
  
  <p>Does anyone has this issue? Thanks in advance!</p>