How do I make my new template the default?

[Gutspiller]

When I do that it won't give people the option to pick a template.

Here is what I have and want.

I have my first template that is named default. I designed a new template called Extra Crispy. I want the new default one to be the Extra Crispy design, so when people first come to the site they see the new design, I want the old design, that was the previous default to be selectable in their control panel.

When I change the default to the extra crispy then in the control panel when you try to change back to the old design, it's still the new design. How do I fix this?