Thread:Project:Forum/Wowhead Tooltips

I have tried to install the script in order to have Wowhead tooltips appearing when I mouseover an item link.

To do it, I have changed the line $ret .= " \n"; in OutputPage.php with $ret .= " \n \n";

But when I mouse over a link, the background of the tooltip is white, but it should be blue and I don't understand why it is white...

Can somebody help me ?