How do I desactivate the LG theme on a G2 mobile phone?

[AC Question]

I want to desactivate the LG theme as it is black and white...
Photos and videos too are black and white with this theme.

 

[B. Diddy]

Welcome to Android Central! Are you sure it's a theme? Make sure any power-saving modes are turned off. Also look in Settings>Display or Settings>Accessibility to see if there is an option for Greyscale.