This inspiration of collection for modern home interior designs. The size of a room or the features within it dictates basic interior design elements. If you have a small office, for example, an antique roll top desk smack in the middle of room will make the room feel crowded. A better choice might be a more �airy� piece of furniture. The color wheel explains how to balance the use of color for what is known as a harmonious effect.Neutrals are forms of white, black, gray and beige. Neutrals are predominately used as the foundation of a room�s scheme, but can also be the primary decoration, then accented with color.