title: change color in FooterTab in React-native using native-base library
body: <p>Can't seem to customize the <code>FooterTab</code> properties.</p>
  
  <p>In the documentation it doesn't say much about how to edit.</p>
  
  <p>This is my code:</p>
  
  <pre><code>&lt;FooterTab
    tabActiveBgColor="#4fb5f9"
    tabBarActiveTextColor="#2d83bc"
    tabBarTextColor="#6b6b6b"&gt;
    &lt;Button&gt;
      Inventory
      &lt;Icon name="ios-list-box-outline" /&gt;
    &lt;/Button&gt;
    &lt;Button&gt;
      Survey
      &lt;Icon name="ios-camera-outline" /&gt;
    &lt;/Button&gt;
  &lt;/FooterTab&gt;
  </code></pre>