Earliest decoration of porcelain was blue & white, hand painted in under glaze blue. This
method is
sometsuke in Japanese. Iroe also known as akae, is a colored porcelain. Both
are decorated in over glazed colors.
Nishiki-de means a style of a nishiki weaving which
has multi color decoration with gold. When a porcelain has both under glaze blue and
over glaze multi colors, this can be called as some-nishiki, a combination of two layers.  
Methods
Iroe Bowl
Sometsuke & Iroe
IMARI
Sometsuke Plate