Based on the above, the feature that he can use to find and alter the desired color is hue and saturation.
What is hue and saturation?
Hue is known to be the key wavelength of light that is said to enter the human eye and it is one that interprets as color while Saturation is said to be the amount of the color.
Thus, Based on the above, the feature that he can use to find and alter the desired color is hue and saturation.
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