>I said that it's a problem in the dark version of the Adwaita theme.
I don't understand what this has to do with Adwaita either, as I said this can affect every toolkit and every app and every web site because most of them have their own theme. For example this site we're on now has an IMO awful default theme that strains my eyes, and doesn't have any official support for theming. We can't blame GNOME for that one.
>It's the only solution that comes to mind
Actually I mentioned a few other solutions that could work. Theming is not even a real solution sometimes, for example some closed source apps just don't support theming at all and can't be easily hacked to change the colors. If that happens you're pretty screwed, unless you pursue an alternate solution.
>When using gedit
Just FYI gedit is replaced in GNOME 42 with a new GTK4 text editor that has themes built in: https://blogs.gnome.org/chergert/2021/12/03/text-editor-happ...
If the other GNOME apps decide to support these type of themes it will be a while before that happens too because their ports to GTK4 and libadwaita are not finished, and because they will probably wait for the recoloring API instead of doing it all in CSS like the text editor currently does.
>Of course, some people may not have this problem and they might find these choice of colors as perfectly normal which is exactly why theming and user choice is important
But this isn't an argument in favor of "theming and user choice", this is an argument in favor of providing a low-contrast option for accessibility.
>unsupported, generally looked down upon
This is incorrect. There are several official extensions maintained by GNOME developers.
>and called as hacks by the GNOME team, just like GNOME tweak tool and GTK_THEME
That's somewhat true, extensions can be very hacky. It is however a lot easier to maintain one extension then it is to maintain thousands of themes for every possible toolkit, app, web site. If you view theming as the only other solution then your choice is really with choosing one hack versus another hack. If you're not planning to develop any themes or extensions and maintain them yourself indefinitely then I really don't understand why you would even care about themes at all, the best option for you would be a low-contrast toggle.
I think you may be confused about the full definition of "unsupported" here. The tweak tool and GTK_THEME (and in some sense, extensions) are not considered unsupported because nobody wants those features. The missing piece is for somebody to figure out what a reliable solution is and make everything work correctly with a real API, and then volunteer to support that for years.
>Does it allow changing the background color of a window and foreground color of the text in a GTK app
In some way it does. I don't know why you're asking me this because I can't decide for you, if you're an app or theme developer you need to look at the draft yourself to see if it would be adequate for you. From what I hear, it should roughly do what you can see in those text editor screenshots I linked above.
>would it be officially supported?
I don't know what the status of it is, I only saw the draft. You would have to ask the developers. IRC or Matrix is a good place to ask questions.