Fontawesome Icon within round Circle

Fontawesome Icon Cheatsheet:
http://fortawesome.github.io/Font-Awesome/cheatsheet/

Step 01: Here is the HTML Code:
          <div class="col-lg-4">
            <aside class="iconbox text-center">
                  <span class="fa-stack fa-lg">
                    <i class="fa fa-circle fa-stack-2x"></i>
                    <i class="fa fa-flag fa-stack-1x fa-inverse"></i>
                  </span>
                  <div class="iconbox-content">
                      <h4 class="title">Clean &amp; Responsive</h4>
                      <p>Lorem ipsum reprehenderit minim in cillum exercitation labore quis velit occaecat tempor tempor.</p>
                      <a href="#">Learn More &rarr;</a>
                  </div>
            </aside>
          </div>
Step 02: Now style in CSS:

.fa-circle {color: #3E96FF;}

likewise you can color any icon.