http://gurneyjourney.blogspot.com/2008/02/shapes-of-color-schemes.html
http://gurneyjourney.blogspot.com/2008/02/from-mask-to-palette.html
http://gurneyjourney.blogspot.com/2011/09/part-1-gamut-masking-method.html
http://gurneyjourney.blogspot.com/2011/09/part-2-gamut-masking-method.html
http://gurneyjourney.blogspot.com/2011/09/part-3-gamut-masking-method.html