Table 5.

Color characteristics of PUR foams—brightness (L*), red-green shades (a*), yellow-blue shades (a*), total color difference (ΔE*).

Sample Code	Colorimetric Parameters
	L*	a*	b*	ΔE*
WS-0%	60.25	22.45	−5.10	0
WS-10%	45.10	35.50	−2.10	29.85
WS-20%	40.20	40.20	−0.60	29.94
WS-30%	24.25	48.50	1.40	39.73