[xwiki-users] Login Style

Greetings Folks, I have setup XEM with application etc to deploy multiple wiki's and it is working a treat. Only one problem though. Most of our wiki instances are for private access only. So under RIGHTS I have checked "Prevent unregistered users from viewing pages, regardless of the page or space rights" which works exactly how I would expect it too except for one thing, the style does not cary from the wiki onto the login page. I am only new to the xwiki world, if somebody could point me in the right direction (documentation etc) that would be great. Thanks Ben