[DanielleMolloy]

What about good old dark editor themes or, better: Inverting of screen colours? Staring at a bright computer screen for hours is a recipe for tired, red eyes. And all operating systems offer negative screen colours. On OS X it is an accessibility option and has the standard shortcut control+option+command + 8.

Android and iOS also can do this. On iOS it's again an accessibility option, press the home button three times after it is activated and you will be able to read HN much longer (also, a black+blue HN is nice).

I am using this option so much that I finally switched from Ubuntu to OS X on the desktop after an Ubuntu upgrade at that time eliminated negative screen colours (and hibernation, but this is a different story), and it was impossible to bring it back.

I also like Flux darkroom, but after some time it gives you the feeling of being in a horror movie.

[unclebucknasty]

I get an extreme ghosting effect after reading on an inverted color screen for even a minute or less.

I don't generally hear others complain. Maybe it's rare.