Yellow and orange dyes are from henna and saffron, blues dyes from indigo. The same process is used in the rug cooperative. In Morocco, there are a lot of touts from the souks offering rugs (not as lousy as Turkey even though) and customarily mainly because they are so prevalent https://moroccan-rug-etsy19122.blogs100.com/38860803/not-known-factual-statements-about-moroccan-rugs-for-sale