1. A color processing method comprising: outputting, via an image output device, a chart image in which a plurality of images obtained by applying illuminant corrections corresponding to a plurality of different illuminants to images corresponding to a plurality of representative colors are arranged in a predetermined layout; receiving a user's instruction to select one of the illuminant corrections corresponding to one of the plurality of different illuminants based on the output chart image; and setting the selected illuminant correction to be applied to an original image, wherein the plurality of representative colors are memory colors.