Typo example

Here is a small typo in our JavaScript. Can you find it? What will happen if we try to open this page?"

<html>
<head>
<body>
This is just some text that might be on the page.
<br />
I hope you are enjoying this.
<br />
We are going to have fun with it.

<script language="javascript">
        color = prompt("Choose a color (red, yellow, blue):);
        document.bgcolor = color;
</script>
</body>
</html>