Number of units: 90 (10 colors, 9 pieces per color)
Designer: Meenakshi Mukerji
Instructions: Here. Also, check out Assembly Guide. Instructions also found in the book Ornamental Origami: Exploring 3D Geometric Designs (2008, 154 pages) by Meenakshi Mukerji. To get started with models like these, check out How to Make Intersecting Plane Models.
Comments: Individual modules are very simple. To make the assembly snug, I shaved off the outer edges created by the last fold with scissors. Took me between 6 and 8 hours to finish. The overall design is 'ten intersecting stars', one star per color. Each star is in a plane -- notice the star made by light blue paper in the picture.