Found this link http://www.asiantextilestudies.com/green.html with beautiful colors and lots of
info on what people have figured out to get greens on cotton. Coral trees leaves were used in 1 and have seen Coral trees in a few places as landscaping. Some dyeing use lime (can get high alkalinity from ash water) from shells (Oyster). Wonder if can get Oyster shells from Whole Foods. Will look at the other plants different peoples have found work for this.