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Analogous color defined at: http://en.wikipedia.org/wiki/Color_scheme :
Analogous color schemeAnalogous colors are colors that are adjacent to each other on the color wheel. Some examples are green, yellow green, and yellow or red, orange and yellow. Analogous color schemes are often found in nature and are pleasing to the eye. The combination of these colors give a bright and cheery effect in the area, and are able to accommodate many changing moods. When using the analogous color scheme, one should make sure there is one hue as the main color.
The interview is very interesting, give it a read: http://noeticmusings.com/?p=299. Enjoy!