I would like to see....
A true frosty beige, kinda the color of Shroom only frostier with the consistency of Tan pigment. All their beige-ish pigments have the texture of baby powder, and I'd like to see a more pigmented one.
(of course)A true shimmery red pigment
Black pigments that are duochrome (like others said)... either blue or purple would be nice
A lime green pigment that reflects pink (a girl on MUA came up with this one)
A true peach color that reflects fuschia pink
A dark brown like Mulch, but with red pearl
... and I love the idea of the yellow one that reflects orange and pink! That sounds so pretty! And of course, a Parrot colored pigment would be fab!