I just updated to Firefox Developer Edition 94.0b2 - when it reloaded I was presented with the option to pick a “color way” and then opt for the intensity of the color on the theme. No problems with that in the slightest.
But … if I wanted to pick a different “color way” for the Graffiti theme, how do I do that?
I don’t see any settings UI for that as an option in the “settings” page or on the theme management area.