So. Let me summarize:
- If a website provides a dark mode via mediaquery or a custom setting, a Samsung Internet browser in default configuration always alters the styles delivered by the website, resulting in odd colors at best and illegible content at worst.
- There is no way the developer can disable this behavior.
- There are two ways for users to circumvent this:
- Enabling the flag internet://flags/#enable-adaptive-force-dark
- Enable Settings → Labs → “Use website dark theme” - which effectively disables forced dark mode on all webpages, also those that do not provide a custom dark mode
- As far as I understand it is unclear, if the flag will ever be set per default in a future version of Samsung Internet, or if so when this will happen.
I only stumbled upon this behavior today and I am dumbfounded. So Samsung expects us either to disable the custom dark mode once and for all (there is no way to detect if the forced dark mode is applied) or to tell our users that they have to alter their default settings if they want to have a good dark mode experience.
Please, reconsider this. Among other issues, this behavior makes it impossible for developers to guarantee, that their site meets the criteria of the European Accessibility Act (as already mentioned previously in this thread).