I have a Retina MacBook Pro (mid-2015), powering an Apple Cinema Display 24" monitor, and a run-of-the-mill, cheap and poor quality/old Samsung monitor. I've connected both of these displays to the RMBP via Thunderbolt.
Now, since the Samsung monitor is old, I would prefer to use it in grayscale. I'm trying to figure out how to use macOS Sierra to change that, and that monitor only, to grayscale. I would only use it to display information that can be viewed in grayscale (Slack chats, email, Terminal, logs, Mixpanel/Geckoboard analytics, you know, not browse websites). I am well aware that the Accessibility -settings in System Preferences can be applied so that each of the three screens is grayscale. I'm not looking for that. If I was looking for that, I'd just launch a Grayswitcha-app I made with AppleScript.
I'm looking to set the Samsung, and only the Samsung, to grayscale.
Is there some way of doing this?
Would really appreciate any assistance on this.
PS Not looking for "change all your apps to be grayscale, and then if you want the same app to be colored too on a different display, do another profile/alias for each and every one of the apps, then run it with the color... oh hang on that's a great deal of work, do it anyway cos this is a good solution" -type solutions :( PPS also not looking for "solutions" where i'm told to properly color profile correct the Samsung, If I was, I'd have solved that already by asking a different way. I'm looking to shoot grayscale data at the Samsung and that is really all.