元に戻すにはどうすればいいのだ？

the only problem is that i did not find this sooner :)

magnifique

its super unnecessarily complicated to get themes you make to show up in the regular theme manager, but its a pretty good tool otherwise

No option for old Firefox colors. Photon isn't it. I HAD designed my own and saved it - TWICE and Firefox took it down and reverted to gray again. IF IT AIN'T BROKE DON'T FIX IT. You could distinguish firefox from other browsers before, but not now. And the old designe isn't there. Again, Photon isn't it.

can't save custom backgrounds and have them synced across multiple devices. so dumb