title: How to change customized carousel indicator background color?
body: <p>I want to change <code>img-circle</code> background color when it is active.</p>
  
  <pre><code>&lt;div id="myCarousel" class="carousel slide"&gt;
        &lt;div class="carousel-buttons"&gt;
          &lt;div class="col-sm-4 text-center"&gt;
            &lt;a class="text-center " data-target="#myCarousel" data-slide-to="0" href="#"&gt;
              &lt;div class="img-circle center-block"&gt;
                &lt;img class="carousel-icons-img" src="image/icon-1-student.svg" &gt;
              &lt;/div&gt;
            &lt;/a&gt;
          &lt;/div&gt;
  </code></pre>