chromium/third_party/blink/web_tests/fast/css/color-strict.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
    "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
    <title>Bug 12145: Illegal color Syntax rendered (strict mode)</title>
    <style type="text/css">
      .example { color: ff0000 }
      .example { color: 0000ff }
    </style>
</head>
<body>
    <p class="example">this should not be red</p>
    <p class="example2">this should not be blue</p>
</body>
</html>