Please take a look at this 18th century doll and tell me what is going on on her skirt?
https://s3-eu-west-1.amazonaws.com/vam-blog/wp-content/uploads/IMG_0006_6fe959ed478f2cffebb4aac7944a4447.jpg Is that cotton? The craziest silk I've ever seen? I'll probably never know for sure, but it almost looks like yellow resist-dyed cotton. It's been a while since I was immersed in period dye/print techniques, but I've never heard of such a thing (I think).