Chrome Version : 53.0.2785.70 (also tested on Canary)
OS X version: 10.11.6

- Go full screen on a YouTube video.
- Wait for all UI elements to hide, including progress bar and "Esc to dismiss" overlay.
- (Optionally) witness a single frame from the last video you watched fullscreen blip in to the render queue, right as it shifts to the hardware path.
- Notice a color shift in the video - skin tones get more green.
- Mouse. The controls reappear, the colors shift back.
- Wait. The UI fades, the colors get green again.

This is a good demo video (right-click, choose Loop, otherwise it's too short):

https://www.youtube.com/watch?v=iYPuTv0F8XI

Caveats:
- This is on a Retina MacBook Pro 15, Mid 2014 model with dual GPUs. If the discrete GPU is pinned open, say by leaving Resolve open as you've just generated your test card, the issue doesn't occur - it only shows with the integrated GPU.
- This doesn't happen for unencrypted H.264.
- This does happen for Netflix content, that doesn't use the GPU.
- Unfortunately, I suspect that the matrix used in the common case is actually the wrong one, and that the move to the slightly greener matrix during fullscreen is actually the only time things are correct, but I need to validate that more thoroughly.