So, Julian Silverman and colleagues wanted to show how these natural dyes can be used in tie-dyeing to produce designs of white, brown, orange and bluish-black colors on cotton napkins.

image: Tie-dyeing cotton fabric with acorn and rust solutions turns it brown, orange, blue and black. view more Credit: Adapted from Journal of Chemical Education 2022, DOI: 10.1021/acs.jchemed ...