To see it in action:
Crust.piefed.social (the Piefed development instance)
Not all instances implement it yet, I guess it depends how often they pull from the dev branch
Example of search for 'movies'
As in old.reddit or the old “new” reddit they apparently changed a week ago.
I’ve been messing around with customising themes all week on https://quokka.au, and I would be happy to give it a shot.