These are two cups I made, nearly identical, with the dragon motif.  They are only two and a half inches tall.  I did the design by painting on wax resist, then dipping in shino.  The other cup turned out much darker, nearly black with trapped carbon.  The darker cup, unfortunately, got broken .  Same clay (Coleman porcelain) same kiln, same glaze, same size, same design.  Drastically different.