i thought not!
using any kind of overglaze/mix is a non-starter as it just could not adhere evenly to the cylindrical curved surfaces during firing. the trail-decorated bead can be marvered smooth and flush and also possibly ground smooth if really required... however i also doubt that any of the beads are ceramic despite the illustration caption:

"Pottery and glazed beads with Paiwan Tribe motifs, Dragonfly Studio, Taiwan.jpg"