im pretty sure this could only be printed simulated process...
although it has less than 8 colours, the opacities per colour (in particular the black) change.
If you set it up with each color on different layers and it doesn't require some insanely complicated sep job, it could probably print with spot colors. it'll just need halftones where the colors change opacity.
although it has less than 8 colours, the opacities per colour (in particular the black) change.
hope you enjoy :)