Color checkbox

Hey,

Is there a way to make use of <ion-checkbox> with using color-classes?
This does not work:

<ion-checkbox class="checkbox-assertive">

Thanks.

  <li class="item item-checkbox">
    <label class="checkbox checkbox-assertive">
      <input type="checkbox">
    </label>
  </li>

The answer is in this thread

Colors: http://ionicframework.com/docs/components/#colors