6502.org

FWIW, as well as using Dark Reader on PC Microsoft Edge browser, I use Microsoft Edge browser on Android also and it has a built in dark mode setting you can enable, which works great, there's literally only been 1 or 2 minor websites where I've had to disable dark mode. It also has an add blocker built-in and just these two features make it way better than Chrome IMHO.

However, 6502.org doesn't seem to show up as a mobile site, so, whilst the colours are great, the text is tiny

Not only do I force the text color to black to improve contrast, I also force an extra space between successive sentences. 

Unfortunately, like a lot of other things involving technology, a sort of arms race has arisen between website developers and browser writers, a never-ending contest, as it were, of who can add the most useless features to the “browsing experience.”  The results are stupid-looking fonts, insufficient contrast, color where it is not needed, mouse-overs (particularly annoying), cookie disclaimers, delayed popups telling me to “click here” to enable an unwanted chat feature, etc..  And, no, I don’t want to sign up for your newsletter or participate in a survey that is hosted on Google.
That pretty much sums it up.

Sorry if this has been mentioned before, but I just discovered "Dark Reader" for Firefox that will turn every site into a dark mode site.

Doesn't look perfect on this site, but good enough for me.

https://darkreader.org/help/en/


** Edit ***

Looks like it was mentioned for Edge. Anyway, looks pretty good in Firefox, FWIW.