Table 2 Color and opacity of films

83.23 ± 0.47^a

1.30 ± 0.91^c

11.86 ± 0.37^c

2.23 ± 1.56^d

83.16 ± 0.53^a

1.81 ± 0.22^d

68.09 ± 0.62^b

12.05 ± 1.54^b

29.67 ± 2.65^b

25.27 ± 3.45^c

65.83 ± 1.15^b

7.65 ± 0.57^c

66.64 ± 0.64^b

16.68 ± 2.74^a

32.73 ± 1.89^b

35.77 ± 5.71^b

62.51 ± 1.15^c

9.32 ± 0.80^b

60.24 ± 1.74^c

19.34 ± 0.25^a

39.32 ± 1.66^a

45.87 ± 1.54^a

55.47 ± 1.65^d

12.52 ± 0.36^a