Yellow is an additional essential coloration in Native American beadwork. It is usually related to the Sunshine, heat, and joy. Yellow beads are accustomed to stand for the south, and that is the way on the midday Solar and time of working day when men and women are most active. https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf