Does it go the other way? What if I want light mode on a website that looks dark

You're out of luck if, like me, you have a problem with astigmatic halation. All the cool kids use dark mode.

iOS since 26 has been presenting parts of the system in dark mode despite having the device set to light only. One of the ‘best’ is that launcher groups switch to dark background, but they forgot to switch the text colour, so app names are unreadable. I had hoped iOS 27 would fix it, but no, so I'm switching to Android.