calibrated with a white
standard plate (CIE L⁎=97.83, CIE a⁎=−0.43, CIE b⁎=+1.98), on
an 8 mmdiameter area using a 50 mm diameter illuminated area. The
color values (CIE L⁎, a⁎, and b⁎) were measured on the sample
surfaces and data were taken in triplicate for each sample