How can I change the stock white background?

[Testdom]

After I updated to jelly bean, everything became white, like all the backgrounds became white. For example: the dial pad, the receiving screen, the message screen.
Can anyone please help me with it, after updating from ICS it is looking really awkward for me to use it now.

NEED HELP ASAP!!

PS: I am using Xperia T.

 

[meyerweb#CB]

Check Settings / Accessibility / Negative colors. It should normally be unchecked.