Help! My macbook is displaying everything in reverse color-edit, found answer

[RayOfHope]

My son *may* have have hit some keys while I was out of the room, the other possibility is that my cat walked across the keyboard. I also installed a new battery yesterday. Anyway--my screen is displaying everything in negative colors, what should be black is white, and so on.

I've tried calibrating the color, this isn't working.

Can anyone help me?


EDIT--found the answer. If this ever happens to you, press control option command and the 8 key at the same time. Voila! Problem fixed.

[Poiuyt]

1. You can also access the controls in the System Preferences

Go to Universal Access and under the "Seeing" tab, click on "Black On White"