John Hersey developed Unison's color scheme in unified cycles of 18 colors. He observed from nature that a single color takes on endless variations of hue, depending on the quality of light that strikes it. After 15 years of experimentation, his pastels reflect the true nature of color. They have a color scheme that flows from nature itself, seducing the eye with its power. Unison pastels are a work of art themselves! One of our customers actually gets tears in her eyes looking through the Unison colors, and she says "these are just so incredibly beautiful, my heart races when I see the endless array of color!" Color charts are available upon request. Mail in Rebate for Unison Pastels! Up to $200.00 Back! Selected Pastels, Now through December 31, 2011! Act Now!Click Here to Download the Jack Richeson Rebate Form! (.pdf)