The best way you as a parent can stimulate baby's vision is using black and white or light and dark contrasting colors. So what about those nice soft pastels that used to be so popular in baby toys and nurseries? While these may look pretty to you, they do nothing visually for your baby. Research has proven that black and white contrasts register powerfully on baby's retina and send the strongest visual signals to baby's brain. Stronger signals mean more brain growth and faster visual development. Surround a baby with soft pastel colors, and you might as well be blindfolding him. Surround your baby with black and white products or pictures, and watch your baby's eyes light up.