[xwiki-users] Colibri skin inaccessible when unregistered users blocked

Hello all, We've been trying to setup wiki access rights in a manner that only registered users can access pages. As a result, we blocked any unregistered user from either viewing or editing pages without a login. This was due to the fact that we were trying to setup a feedback mechanism where it was important to know who gives the feedback. However, due to these access right changes, the Colibri skin themes applied from the presentation control panel no longer work. The default Colibri theme (with the gray background) is what comes up. I am assuming this is due to the fact that the themes too are pages in the wiki (with the Colibri skin & ColorTheme space being introduced) & blocking everyone out from viewing/editing pages will apply the same access rights to the ColorTheme space. The strange part is when a user does login, still the skin remains the default one and doesn't change to the theme set in the presentation panel. Could anyone please recommend a workaround to this. Thank you for your time & consideration. Regards, Dilipkumar Jadhav