<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<style>
		.b2c-step .b2c-row input, .b2c-step .b2c-row select, #prefilled_section .dropdown {
			border-color:#<?php echo $_GET["color"]; ?>;
		}
    </style>
</head>
<body>Blah</body>
</html>