Yeah well you just need to watch out for little things like that. You where trying to add a class account to the style array and those are defined in the forum integrations or the bottom of pp-inc.php. The style array is what enables us to assign other style class names to the templates in different forum integrations. In what you wanted to do you simply needed to put in the template the exact class name since those style array calls really map out to a default style name.
Content visible to verified customers only.