Each of the sixty color schemes in this book have at least one neutral each. Some of the schemes are very neutralized, such as Olde World. Others, like Hawaiian Flower are very vivid and clear colors. As your tastes change, it is easier to give a room a whole new look if the carpet is a neutral, rather than a bright vivid hue. We also don't tend to tire of neutrals as quickly as pure colors.
Many people find that beige is an easier neutral to live with than gray.
Beige is usually much warmer and more intimate than gray. Taupe is another extremely popular neutral. It is a combination of beige and gray and can be either warm or cool. There are literally hundreds of tints and shades of taupe. Neutrals help to add contrast to a room and they create balance in the color scheme.