The scam happens when you click wall post with a link stating you can change the color of your Facebook theme from blue to black. After clicking the post, the user is then directed to a website that claims they can change their Facebook color to any color they want. The user is persuaded to click a button that says Change Your Color, and then the site hijacks the used Facebook account and installs a virus to your computer.
At the end of the day, your Facebook colour won't change. If you've fallen for the scam change your password right away and let your Facebook friends know not to click on it.
