Unknown app

[citibori]

Does anyone know what this app is? I saw this on a display iPhone at a best buy. It wasn't jailbroken. I checked. You see how it changed the icons?

 

[WreakingHavoc]

IconProject?

 

[StaticFX]

It looks like a negative image of the home screen.

 

[Rene Ritchie]

It's not an app, it's a feature:

Settings -> General -> Accessibility -> White on Black.

 

[citibori]

It's not an app, it's a feature:

Settings -> General -> Accessibility -> White on Black.

Thanks!!! Finally found it