I would like to add 'RED' color while value comes negative and 'GREEN' color for positive value. I tried a lot to figure out why it's not working but don't get success.

Kindly correct my script. What's wrong in below code:

```
<!DOCTYPE html>
<html>
<head>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

<script type="text/javascript">
$(document).ready(function () {
$(".status")
    .filter(function () {
    return $(this).html() < 0;
})
    .parent().css('color', 'blue');
});
</script>

</head>
<body>

<span class="status">10</span><br />
<span class="status">-1</span>

</body>
</html>

```