Change the color mode to be determined according to the three values L *, a * and b * corresponding to three dimensional axes of the CIELAB system (CIE 1976 color space). In the CIELAB coordinates, axial, L * representing the dark (changes from 100-white to 0-black), a is a combination of red-green leaves from-60 (green) to + 60 (red), and b * are the yellow-blue range-60 (blue) to + 60 (gold). These values are used to calculate the value of the color change ∆ E * (false color levels measured according to CIELAB coordinates) as a function of change according to the time trials are as follows:
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