[snypher]

I often use ctrl-win-c shortcut for black and white mode in Windows, it's great to rest the eyes.

[mattsnuts]

Ah man about a year ago my windows went black and white and I didn’t know why and couldn’t figure it out, I must have pressed this. Had to reboot to fix it.

[webprofusion]

That's awesome, I had no idea that was a feature, using it now!

[Theodores]

On Ubuntu it is not quite like that.

https://github.com/ionutbortis/gnome-bedtime-mode

Yeah, you have to do some installing to get the feature you never knew you needed.