JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
<div data-ng-app>    
  <span data-ng-init="colors.bg='#00FF00';"/>
  
  <style type="text/css">
  body {
    background: {{colors.bg}};
  }
  </style>
  
  <input type="text" data-ng-model="colors.bg"/> 
</div>