A program for causing a computer function as an image information input portion for inputting an information on an image including a first image data used to display the image on the image display portion, a second image data formed of color components of a color space enabling a measurement by a colormeter for at least one color included in the image, and a data on a position or an area of the image where a color corresponding to the second image data is present, an image information storage portion for storing the information on the image inputted by the image information input portion, an image display portion for displaying the image using the first image data included in the information on the image, a color designator for designating a color possessing the second image data in the information on the image, a color measurement portion for measuring a color value of the color designated by the color designator which color is in the image displayed on the image display portion, and an image data correcting portion for comparing a color value data outputted from the color measurement portion and the second image data corresponding to the color value data and included in the information on the image and correcting the first image data included in the information on the image so that an error between the two data is equal to or smaller than a predetermined threshold value.