Original post by: Revolver265 ,
You might have high contrast mode enabled. With all the different flavors of Android around, I can't help you specifically but you might want to look at Settings and see if High Contrast is on in Accessibility or Display. You haven't provided much information about what caused the issue or if you've tried to turn it off and back on again. Speaking of, try turning it off and back on again, along with the things I mentioned earlier.