Every colourglaze has it's own number.
Colourglazes were put on all shapes, not just 781 Tulips.
I'm half way, so will add my findings so far.
Brown 400/3 (the common brown) 1st row left
Filigree Brown 408/3
Matt Brown 423/4 on outside of Echo cups
T.Pot Brown 436/1 1st row right
Impact Brown no number
Rustic Brown on Focus
More to come ...... another day.
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