Maighstir: With how many people "can't use the light theme without sunglasses" if these threads are anywhere near statistically correct, I imagine about 65% of GOG users have their screen brightness turned up to 23. On a 0-5 scale. So that even #000000 looks like a light grey (there should not be more than about a handful of white pixels on any given forum page with the light theme, and common office paper under normal lighting should be lighter than the light theme of GOG - unless, again, your screen brightness is insanely fucked up).
JDelekto: Is there a utility to allow you to set the brightness of your monitor to what is considered "appropriate"? The one problem I've found is that some games want you to adjust your brightness to see something 'barely visible', then you end up stuck with that after the game. I tend to think that the game itself could be at fault in that instance and being able to restore brightness (or even contrast) to an appropriate level would be something really cool as a utility.
While f.lux and Redshift are already mentioned, I feel I should probably inform that both of those modify the image that the computer sends to the monitor, but
the first thing I would do is take a look at the settings of the monitor itself with some
test images (99.99% of external monitors have some sort of setting/menu system built-in via buttons/dials on the monitor itself - TVs may or may not have them but rarely as full-featured as monitors, and I have yet to know of a laptop that does).
