My current desktop has been Fedora since Fedora 16, and I just upgraded from one release to the next continuously. So yes, whatever choice I made back in 2013 is just going to stick around on my current machine unless it goes away entirely or I manually change it. Colors are just not that important, if I like it well enough, it's going to stick around forever.

The only one that caused intense feelings in me was the "Dreamer – Bold" theme that caused a fair amount of confusion about why the heck couldn't I tell which tab was active, and what could be possibly broken. Because it never occurred to me that the theme could be designed that way intentionally.

People using colorways after the feature was removed? Well, that sounds like a failure of the feature then.

The whole crux upon which the colorways marketing rested, was they were temporary! You get to change your theme for a few months, and then later on at some random point, it changes again as it's taken away from you.

If users have managed to continue using those themes, well, that's in spite of what Mozilla did with them, not because of them.

The criticism of colorways wasn't because people hate browser themes, it's because making features that self-destruct after indeterminate amounts of time is user-hostile. "Limited time features" is alone enough to make someone want to swap to a fork.

So it hadn't occurred to me since then that I could change it.

I guess I count among the users who are still using a colorways theme. But after getting used to it, I ended up thinking of it as being what current Firefox looks like by default.

The users who regard colorways as frivolous likely also disabled the telemetry.

Rather like how the "psychological profile of a serial killer" is merely the psychological profile of a serial killer the police are capable of catching.