Table 2.

Post-hoc mean L* comparisons among study groups

Groups	Room temperature		High temperature
	∆L*	a p	∆L*	a p
Control/white	−4.47	0.002*	10.10	<0.001*
Control/blue	−1.98	0.999	7.33	<0.001*
Control/yellow	−3.48	0.035*	5.95	<0.001*
Control/green	−0.93	0.999	4.97	0.006*
Control/reddish-brown	−1.62	0.999	4.16	0.045*
White/blue	2.49	0.428	−2.77	0.697
White/yellow	0.98	0.999	−4.15	0.046*
White/green	3.54	0.030*	−5.13	0.004*
White/reddish-brown	2.84	0.188	−5.94	<0.001*
Blue/yellow	−1.51	0.999	−1.38	0.999
Blue/green	1.05	0.999	−2.36	0.999
Blue/reddish-brown	0.35	0.999	−3.16	0.350
Yellow/green	2.56	0.370	−0.98	0.999
Yellow/reddish-brown	1.86	0.999	−1.78	0.999
Green/reddish-brown	−0.69	0.999	−0.81	0.999

^aIndependent samples t test

*p < 0.05