title: Ionic: Change ion-navicon color
body: <p>I have a navigation bar:</p>
  
  <pre><code>    &lt;ion-nav-bar class="bar-green-mint" align-title="center"&gt;
          &lt;ion-nav-back-button&gt;
          &lt;/ion-nav-back-button&gt;
  
          &lt;ion-nav-buttons side="left"&gt;
              &lt;button class="button button-icon button-clear ion-navicon menu-icon" menu-toggle="left"&gt;
              &lt;/button&gt;
          &lt;/ion-nav-buttons&gt;
      &lt;/ion-nav-bar&gt;
  </code></pre>
  
  <p>I want to change the color of my navigation icon. For 'normal' icons like:</p>
  
  <pre><code>&lt;i class="icon menu-icon ion-home"&gt;&lt;/i&gt;
  </code></pre>
  
  <p>I just needed to add the css:</p>
  
  <pre><code>.menu-icon {
      color: white;
  }
  </code></pre>
  
  <p>but this does not work for the navigation icon.</p>
  
  <p>So how can i set its color to be white?</p>