When you blend a blue with a pink duochrome, and a pink with a blue duochrome, you get… this.
I was working with raw mineral pigments but you can get the look with
center: MAC Cornflower pigment
inner 1/3: Urban Decay Fishnet or MAC Stars n Rockets
outer corners: MAC Flashtrack
[EDIT] P.S. I also had a little MAC Concrete (matte brown along the socket!)
I did spray my brushes with a mister AFTER picking up the colors, to get a smoother and more intense finish.
(And this is a day look, no matter what they say. Cos duochromes look WAY more psychedelic and much better in daylight.)