<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Color 4: deprecated system colors</title>
<style>
    .ref { background-color: Canvas; width: 12em; height: 12em; }
</style>
<body>
    <p>Test passes if you see a square, not two rectangles of different colors; and no red.</p>
    <div class="ref"></div>
</body>