Since a recent update the iOS Firefox background has now changed to white from black. I would like to change it back, since the app stays white no matter what: even when my phone is in dark mode. Even Firefox’s own settings are in dark mode. The app icon is way too bright at night now and bothers my eyes at night. If the icon background is now white by default, I’m assuming there must be some way to get it to be black all the time again.

Can anyone tell me how to get the old icon colour back?