Box or bar around op

Hi there

Just had some fun implementing flatforum and making up what's shaping up to be a really nice forum.

I've run into a slight problem. The friends I'm doing the site for first wanted the original post to be white due to the OP appearing at the top of every page, so they could distinguish it easily from the rest of the thread and not get confused. I did this by commenting out

$variables['row_class'] = _row_class();

under case 'node' :

This made the OP white as requested, however they now want a border around the OP as well (they have this thing about boxes :), either that or a nice gradient divider thingi on the top and bottom of the OP. I really can't figure out how to get those to go around just the OP. If anyone has a spare moment to point me in the right direction, I'd really appreciate it.

Thanks muchly :)