I've been using the new theme customizer and it really has me thinking how awesome it would be to allow potential theme buyers/clients etc to play with the customizer for a demo theme (without being logged in). The customizer is located at :
So what it would take would be to somehow allow open access to this URL but nothing else in the back end. I suppose there is probably a security issue with this but I thought I'd get a discussion going on it here in case it's possible to do this safely as I'm sure other people might have the same idea.
So the question is : is there any safe way to allow open access to a single page of the admin?