Colors were defined and categorized by the shape of their spectrum (as per [8]) to provide a nonsubjective analysis of color and a convenient description that we can easily understand 8 and 9. Blue/Red is defined as having a peak in reflectance at 450–500 nm and a step in reflectance at 650–700 nm; UV/Blue is a bell-shaped curve with wavelengths in both the ultraviolet (