screen on my Google pixel 2 phone suddenly changed to look like a black and white negative?

[Android Central Question]

I was looking at a friend's video on FB when the screen on my phone suddenly changed to look like a negative of a photo?

 

[SpookDroid]

No idea how that could have activated itself, but check your Accessibility Settings on your phone. The 'Vision' section should have a 'Negative Colors' or 'Inverted Colors' option. If that's active, that's what's causing it.