Color title bar in provacy policy link are not full wideth in pop-up

look at the purple title bars here: http://next.dev.curriki.org/xwiki/bin/view/Main/PrivacyPolicy?xpage=popup (The link form the registration form) as compared to here: http://next.dev.curriki.org/xwiki/bin/view/Main/PrivacyPolicy

It is to narrow in pop-up mode.