CSS Disabled Psuedo-class test

HTML

<html>
<head>
</head>
<body>
    <input type="text" value="enabled"/>
    <br />
    <input id="disabledInput" type="text" disabled="disabled" value="disabled"/>
</body>
</html>

CSS

input[disabled="disabled"] {
    color:#f00;
    background-color:#ff0;
}