The object of the present invention is to generate automatically a color design for a display object to be displayed on a computer graphics screen. In order to achieve this object, the computer program product of the present invention is a computer program product wherein a computer program for causing a computer system to execute processing for automatically generating a color design for a display object to be displayed on a screen is recorded on a computer-readable recording medium, the computer program implementing: an input step of receiving specification of colors constituting a first color design for the display object; a converting step of converting the colors specified at the input step to other colors, in accordance with a previously determined color converting rule; and a step of creating an association for the colors obtained in the converting step, as colors constituting a second color design for the display object.