my mother turned on my Emerson 32 inch flat screen TV last week, and says didnt do anything other than chnage the channel, as she is fimiliar with doing, using the controller that we use from Direct TV. Now since we re back home, ever since we turned on TV, it is in black and white, this is with any channel we try! what did she maybe do, that we can undo, as we want the color back thx