title: Change active color in multiple select menu on the option tag
body: <p>The selection option value is blue, however when you click on anything else on the page it becomes a faint grey. Is it possible to change either of these colors? Most importantly the faint grey for accessibility reasons. </p>
  
  <p>I have tried a number of things in CSS however haven't had any luck.</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;label class="multiDropdown-label"&gt;Multiple Select
    &lt;select multiple&gt;
      &lt;option value="1"&gt;1&lt;/option&gt;
      &lt;option value="2"&gt;2&lt;/option&gt;
      &lt;option value="3"&gt;3&lt;/option&gt;
      &lt;option value="4"&gt;4&lt;/option&gt;
    &lt;/select&gt;
  &lt;/label&gt;
  </code></pre>