In a message dated 9/26/2004 6:34:59 PM Eastern Daylight Time, susanann@sbcglobal.net writes: >The reality is a different reality to each person The perception of a "color" is an event charactized by a blend of three components: The light source (illuminant) The interaction of an object with the illuminant The observer The response of the observer is non-linear and cannot be explained simply by trichromacy (red, green, blue receptors) As the cornea ages and yellows, response to color (mostly blue and green) changes The human eye is deficient in discrimination of yellows Humans are more sensitive to discrepancies in hue than discrepancies in saturation or brightness Memory colors (i.e. skin tone, green grass, sky blue) matter more than non-memory colors. Relationships between colors are more important than the colors themselves. The surface of an object and the manner in which it reflects, transmits or fluoresces light is important to the perception of color. Mark Mazer Intarsia Ltd. Gaylordsville, Connecticut 06755-0142 USDA Zone 5 Giant Schnauzer Rescue