title: Add background color when click a button vue js
body: <p>I'm building an app with VUE JS, using different components.</p>
  
  <p>In one of them, I have a button that I would like that change the color when I click on it. This button is choosing different items from a table, so when I press that button I want that the background of that button change to red for example to know which ones I have clicked.</p>
  
  <pre><code>&lt;template&gt;
    &lt;button class="mdc-icon-button material-icons"  @click="doMultiple"&gt;delete_outline&lt;/button&gt;  
  &lt;/template&gt;
  </code></pre>
  
  <p>This is the button. How can I add there the style when button be clicked?</p>
  
  <p>Thanks in advance!</p>