Can you access the "Childishly Simple Options" before activating on live?

Hi,

Is there a method to be able to access the “Childishly Simple Options” page to customise the theme before making it live on the public site.

At present I can only access this if the theme is activated (and showing on live)

My aim is to spend some time customising the theme then switch over when i am ready – rather than take the site offline while i do it.

Many thanks
Chris