I allowed my nephew to play with my Macbook, and I don't know how he did it, but the screen looks dark, kinda like a picture negative!! it used to be bright white and easy to read...now even my pictures look like negatives! lol What can I do to get my old look back? I already tried making the screen brighter, and that doesn't fix it. I don't like the black background with white font, at all. Hope someone can help me out, this is gonna drive me crazy. Thanks for any help I can get!