Testing a new theme

[prospectofdeath]

Is there an official method for testing a new theme without displaying it to all the users? I've got a working theme right now but I'd like to make a new theme and while I'm testing it I don't want the end users to see it.

Is this possible or do I have to use a different instance of Coppermine for testing?

[Nibbler]

Use index.php?theme=whatever to switch the theme just for you. Specify a non existent theme to drop back to default.

[prospectofdeath]

Thank you