My Pixel C display is showing everything in "negative" view.

[AC Question]

This occurred following an update to Android 7.0/Nougat earlier today.
Can anyone please tell me how to change this ?

 

[belodion]

Try Settings, Accessibility, Invert Screen Colours, which may somehow have got switched on.

 

[smeehere]

Success ! Many thanks for your help - much appreciated.