Have you tried custom themes with #Fedilab?
You can build yours and share them. You can also use the ones built from the community https://fedilab.app/themes/
More about this feature at https://fedilab.app/wiki/features/custom-themes/
@mondstern
We are going to bring last fixes. I flag this one #FedilabBug
@apps
Is that fixed? Otherwise the sharing doesn't work at all.
https://framagit.org/tom79/fedilab/-/issues/500