caarlos0/color.js

## color.js
document.body.innerHTML="";setInterval(function(){document.body.style.background='#'+(Math.random()*0x1000000<<0).toString(16)},50);

## index.html
<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <title></title>
  <meta name="description" content="colors.js HUEHUHEUHEUEHU">
  <meta name="viewport" content="width=device-width">
</head>
<body>
  <script src="color.js"></script>
</body>
</html>
	<!DOCTYPE html>
	<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
	<title></title>
	<meta name="description" content="colors.js HUEHUHEUHEUEHU">
	<meta name="viewport" content="width=device-width">
	</head>
	<body>
	<script src="color.js"></script>
	</body>
	</html>