How to invert your screen colors (apple devices)

Turn on device and open Settings.

Then, open General,

Go into Accessibility,

Next, scroll all the way down to the bottom and go into accessibility shortcut.

There will be a bunch of options, but you will have to select invert colors.

Now you have Inverted colors!

P.S. You have to triple click the square button again to change it back P.S.S. Results may vary due to different operating systems Ex: I am using IOS 7