How do I change my LG android back so that all the apps display black text on a white background?

[Android Central Question]

Overnight it changed--and the available themes change only the wallpaper and button appearance--but all the apps still display white text on a black background. Which I very much dislike.

 

[B. Diddy]

Welcome to Android Central! Go to Settings>Accessibility and see if there's an option for Invert Colors.