Trouble : Display Color Negative / Positive Inversion

[Mickey3.0R]

My Mi5s display color got trouble. It is like Negative / positive inverted or Night view mode.
Is there any setting I might have changed accidentally or is this hardware trouble?
Below is photo of screen(Left) and screen captured image(Right).

 

[Mickey3.0R]

self-resolved. Color inversion was turned on accidentally in user assist mode.