My 14-month son hit something on the keyboard, and miraculously turned the screen saver picture and icons into a negative resolution... any idea how to it switch back to regular color?
This is an Accesibility setting http://support.apple.com/kb/HT3488?viewlocale=en_US
Open System peferences --> Under System Section --> Click Accesibility --> to the right of Display uncheck the "Invert colors" box
Hope is helps
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