Plugin for theme rotation?

Yes there is
https://386a.net/blog/wordpress/theme-switcher/

goodluck!and enjoy

Well, that won’t automate the randomness of course. I’ve been wanting an automated theme randomizer for over a year….

Ah, is that what he and you want.
I gues it could be done in java, so i wil gif it a try this summer

Well, that would be cool! I don’t do java or js, just barely can manage baby-grade php….

ok, I hope i can gif you a suprise this summer

Yeah, thanks for the link! If you can create a random feature for this, that would be great!