I have been experimenting lately with using colored glazes on a buff stoneware clay that has also been stained with iron oxide. I have wiped back the stain to some extent and then applied the colored glazes selectively. I wanted these kinds of beads for some free form peyote stitch necklaces I have been making. I was pleasantly surprised that the colors would be as bright and clear as they are, over this dark background. I am very encouraged by the results.
Some "gesture" beads from mid range buff clay and colored glazes
Another view of the mid range buff ceramic clay beads seen above this picture.
I also tried this approach on some "gesture" beads, ( see pictures above) as I call them, as they are made with one tool and spontaneous movements, once the rounded bead is formed. I have a necklace in process with some of these kinds of beads. See below.
Peyote Stitch Necklace in progress with new buff stoneware clay beads