“…Lawsone analogs, such as the natural anthraquinones emodin and dermocybin, exhibit differences in color; i.e., emodin dyed polyamide is brownish-orange, while dyed with dermocybin is wine red, but on polyester, the colors are totally different: bright yellow and bright reddish-orange, respectively [ 28 ]. Similar results were obtained for different styryl and azo-lawsone dyes of synthetic origin, exhibiting brown (CIELab: 25.057, 13.577, and 17.516) and orange (CIELab: 63.554, 36.699, and 67.159) colors on polyester, respectively, while on nylon, both exhibited darker colors (L* < 40) in the yellow-red quadrant, which agree with our results [ 29 , 30 ]. Moreover, polymers based on lawsone have been obtained with color differences.…”