Optical Illusions--each a masterpiece of colorful design. Aki Nurosi and Mark Shulman, the authors of Colorful Illusions , are back to play more astonishing visual tricks. These exquisitely designed brain-bending, mind-blowing, all-color optical illusions will really fool your eyes. Each is a masterpiece, created to appeal to wide-eyed children, design students, and art lovers. Hold onto your hats-two fancy stovepipe hats, that is: can you tell whether...