Designchoosing splitted in sections?! HELP!

[Oyabun]

Hey guys,
got my vbulletin together with my friend.
My part of the vb is about anime and his part of the vb is about games.
Now I try to explain the problem:

I want a user to choose one style out of 5 for the game vb
and one style to choose in the animevb. How could I do this?
I mean, if the user switches the sections from anime to gameforum
the style should change to what the user saved in his settings for
the "gameforum". When the user switches back to the "animeforum"
the style should change back to what the user saved in his settings
for "animeforum".

It wouldn't be a problem if we both would only have one skin for our
section. (Cause you can add the stylechoosing into a link or can
save the style for the section...)

Hope you guys understood me somehow xD

HELP MEEEE