2. Blue is often used by computer companies. IBM, Microsoft and Dell all use the color blue to show that their companies are serious and dependable. Like the sky and the ocean, blue can be both peaceful and powerful. To show that their computers are for serious people, many companies used to make their computers black or gray. But Apple computer company decided that they wanted computers to be fun instead of serious. For that reason, they made their iMac computers in a variety of different colors in the late 1990s. Today, their ipods come in a variety of colors.