So Blizzard, Where's the Blue and yellow coloration of the Forsaken sets?

Gameplay Transmogrification
1

Purple and green on the trading post, that’s nice and all. But where’s the blue and yellow? Please don’t make coloration’s only to just SHELF them

2

They always focus each month on a fairly narrow (arguably thematic) palette; AFAIR, it’s always two colors. This month is purple and green.

Blue and yellow will have their turn or turns.