1. A computer-readable storage medium having stored thereon a display control program to be executed by a computer of a display control apparatus that displays an image on a display device, the display control program causing the computer to function as: captured image acquisition means for acquiring a captured image captured by a real camera; color detection means for, in the captured image acquired by the captured image acquisition means, detecting at least one pixel having specific range color information in color information including at least one selected from the group including RGB values, a hue, a saturation, and a brightness; image generation means for, on the basis of the specific range color information of the at least one pixel detected by the color detection means, generating an image of an object to be placed in a virtual world; and image display control means for displaying the image generated by the image generation means on the display device.