JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://dl.dropboxusercontent.com/u/57502/jquery.color.js"></script>
<script src="http://jqueryjs.googlecode.com/files/jquery-1.3.2.js"></script>
<body>
</body>

CSS

body{
    /** http://caniuse.com/#search=transition */
    -webkit-transition: background-color 1s ease;
    -moz-transition: background-color 1s ease;
    -o-transition: background-color 1s ease;
    transition: background-color 1s ease;
}

JavaScript

$(document).ready(function(){
    $('body').animate( {backgroundColor: '#333'}, 1000);
});