Thanks Malte, this is absolutely great, it was something like that way I thought this might be possible.
Then I might have another quick question...
Say we have 4 users. 1 Admin and 3 normal users, each user has its own folder and 1 page in ZenPage.
If a theme is changed for one of the folders for each user, Say Black, White and Gray. Lets give us that the gray theme is the default one and the user with the black theme makes a new folder is he going to get black or a gray one. And how are the theme selections for each user if this does not happen, can a user with limited access change his theme on the page on him own.
I hope I made this understandable enough.