Table 2.

Summary of colors obtained for different dyes as a function of different auxiliary products and treatments.

Auxiliary products and treatments	Natural dyes
	Eucalyptus	Weld	Madder	Annatto	True indigo	Woad
None	Yellowish-brown [40]; “brown shades” [42]	Light yellow [44]; Beige [46]	Red [3]; “yellow/orange” [56]; Pink [46,48,52]; Brown, reddish-brown and dark brown [13]; Beige [49]; Orange [50]	“Orange-yellow” [3,62]; “Yellow to red” [42]; Orange [[59], [60], [61]]	Blue [3,24,[59], [60], [61],65]; Gray [24]	Blue [3,36]; Dark and light blue [36]
Alum	Golden yellow [40]; “darker” [19]	Yellow [44]	Orange [50]; Pink [48,49]; Light red [22]
Aluminum sulfate	Yellow [38,39]	Light yellow [46]	Reddish-brown [13]; Red [46]
Tin chloride	Bright yellow [40]
Iron sulfate	Beige [40]	Brown [44]	Gray [48,49]
Copper sulfate	Brown [40]	Olive green [44]
Sodium carbonate		“Light lemony” [44]
Citric acid		“Light creamy” [44]	Orangish brown [50]
Mimosa		Yellow [45]	Red [55]
Pomegranate			Reddish orange [13]		Gray, blue, dark blue olive green [24]
Clonorchis sinensis			Brown [13]
Rhus coriaria			Bright orange [13]
Kumkum					Green, dark blue, bright blue [24]
Quebracho			Beige [49]
Laccase			Beige [49]
AgNPs					Blue and dark blue [65]
Ch–Cy		Yellow [46]	Red [46]
Plasma			Beige and pink [48]
Cationization			Pink and purple [48]
Gall oak						Green [21]
Gall oak + alum		“Creamy yellow” [44]	Dark red [22]
m-Tgase + bentonite			“Pink to red” [52]
Alum + mimosa		Yellow and dark yellow [45]	Reddish orange; Orange [55]
Citric acid + carboxylic acids			Orangish brown [50]
Plasma + alum			Pink [48]
Cationization + alum			Pink and purple [48]
Plasma + iron sulfate			Gray and beige [48]
Cationization + iron sulfate			Purplish gray [48]
Quebracho + alum			Pink [49]
Quebracho + iron sulfate			Gray [49]
Laccase + alum			Pink [49]
Laccase + iron sulfate			Dark gray [49]
Myrobalan or pomegranate + iron sulfate				Dark red [63]
Myrobalan or pomegranate + potash alum				Light and yellowish red [63]