COLORS - Shine in pottery.
ca: COLORS - Lluentor en ceràmica.
es: COLORES - Brillo en cerámica.
Color shine is made up with different glaze intensities, from matte to a crystal shine. If the glaze is too matte after being fired, cover it with a thin layer of transparent glaze and fire again; this is also a sign that the kiln has not reached the required heat.