1. A program storage device, on which are stored instructions for causing a computer system to: select a sample portion of an image that may depict a human face, comprising a plurality of pixels; calculate a first percentage of pixels in the sample portion that are substantially neutral; calculate a second percentage of pixels in the sample portion that correspond to skin tone colors; indicate a first result if the first percentage exceeds a first threshold value; indicate a second result if the first percentage does not exceed the first threshold value and the second percentage exceeds a second threshold value; and indicate the first result if the first percentage does not exceed the first threshold value and the second percentage does not exceed the second threshold value.