انها محاولة لنفسك - CSS Reference outline-color

<!DOCTYPE html>
<html>
<head>
<style>
p {
   border: 1px solid red;
   outline-style: dotted;
   outline-color: #00ff00;
}
</style>
</head>
<body>

<p><b>Note:</b> IE8 supports the outline properties only if a !DOCTYPE is specified.</p>

</body>
</html>