1. An image display apparatus comprising: a 3D display device and a control section for controlling the 3D display device, wherein the control section obtains a drawing pattern corresponding to 2D image data, and displays the drawing pattern on the 3D display device, the drawing pattern being constructed in such a manner that when the drawing pattern is displayed on the 3D display device, the drawing pattern exhibits a pseudo color which is identical to a color which would be exhibited when the 2D image data is displayed by a 2D display device.