Screenshots and screencasts taken on my Macbook Air (Sierra 10.12.2) have a yellowish tint to them which doesn't match the actual display output on the screen itself. It's very odd.
For example, here's a screen grab of this page:
...and here's some screenshot-ception to show that the screenshot is yellower than the thing it's of and how screenshots within screenshots get progressively yellower:
Three levels deep, and the bar which appeared neutral grey on my screen is now almost pure yellow from being yellowed by screen capture three times:
You get the idea. Something is adding yellowness to my screenshots.
Changing my display profile changes the appearance on the screen quite a lot, but barely changes the yellowness of the screenshots. These three all looked very different when I took the screenshots (the last one was almost blue), but the screenshots are all almost the same yellow:
With the last one selected, Adobe RGB, all the screenshots look okay on my screen, but everything else looks tinted blue and they still look yellow to everyone else.
The same thing happens if I share my screen - people I'm sharing my screen with say "Why is your screen so yellow?", and I have no answer for them.
What could be modifying the screenshots and screen shares in this way, and how can I stop it doing it?