Reset Theme defaults

Hi,

I have been running gallery 2.3 for more than a year now. Upon helping a friend setup his own 2.3, I noticed the slideshow behaves different.

Mine is just the black screen with the prev/next buttons. His is the cool iris with the nav bar at the bottom.

I have done a fresh install and was able to get the NAV bar, but if I reinstall over my server, I dont.

It appears my theme data is saved in the DB?

How can I reset carbon theme to its defaults running on my existing server? The reset theme button doesnt seem to do it

Thanks!