Loops needs a dark mode and it needs to be on by default. That was legitimately painful to open in the dark.
Does the darkreader extension not work with it? That's what I use to auto force/generate dark mode on all sites. Works in mobile Firefox (and defivatives) as well.
Edit: Oh yuck! It kind of works, but just makes the yellow darker.
Apt install apt
only makes sense of you first apt remove apt π