title: CSS Variables in Ionic 4
body: <p>I am trying to change the color of the icon in the selected tab and am really struggling with how to overwrite the variable. </p>
  
  <p>I'm doing the following:</p>
  
  <pre><code> ion-tabs {
      --color-selected: #ff7800 !important;
      --ion-color-contrast: #ff7800 !important;
  }
  </code></pre>