title: How to change CSS when it's ng-disabled?
body: <p>I have this <code>button</code>:</p>
  
  <pre><code>&lt;input type="submit" value="@Translator.Translate("PAYOUT")"
       class="btn-block secondary-button save-changes padding-8"
       ng-disabled="PayoutEnabled==false" ng-click="PayOut()" /&gt;
  </code></pre>
  
  <p>But even when it's disabled it has the same <code>class</code> as it's enabled, just not clickable. I want to change background when it's disabled so that user can see that button, is disabled. How can I do that? Do I need some <code>ng-disabled</code> CSS class or there is some other way?</p>