Design firms that have fully embraced CAD have been able to produce remarkably lifelike renderings, reducing the risk of expensive makeovers in a mock-up. In their most primitive form, the renderings resemble adequate photographs. In their most sophisticated form, they place you into the space. When the designer presents his renderings on a computer, rather than printed as they are here, he can change the colors of the décor, dim or brighten the lighting, and switch perspectives. A database of accessories (clip art) lets him quickly alter the ambience of a cabin by substituting one style for another, mixing and matching styling themes.