As a novice, I appreciate your expert opinion. I'm struck by the yellow color. Although I know yellow was an important imperial color, I don't recall seeing many court beads with yellow. Have you?

Because metals are used in enamel pigments, I know enamels can oxidize. Any thoughts on whether the less vibrant enamel court beads were once as bright as my more vibrant beads or do you think they could have been from a different batch of enamel beads (with slightly different colors)? Thank you.