Or people who turn the brightness up on their monitor to "make the sun look dim in comparison".
My TV has its backlight set to '0' (OLED, and a non-real property to set as no 'backlight', but still a metric). If I set it to 100 my eyes bleed. My current monitor with a real backlight has it set to 5. Yes, 5 out of 100.
I think grey on grey works, if the very walls behind you are being bleached by the intensity of the light coming off the monitor.