Update : There seems to be some problem with the David Petty assembly guide link. For the diagrams, go to http://www.davidpetty.me.uk/ / Diagrams (on left side) / Clickable list of all models on this site / search for the diagrams.
8 intersecting planes - stars. Orange is the 8th plane.
I started on 15th April and finished on 17 April.
It took me 3 days to complete this model taking 1-2 hours per day. Totally I would have spent around 6 hours to cut the color printer papers to 4" x 4" size, make the units and assemble. Making individual unit is simple. Assembly gets confusing. I didn't have trouble making first half circle. While making second half there are quadrilaterals and pentagons. I simply assumed there are pentagons but when I tried to assemble that way, it went wrong. I removed / assembled at least 3-4 times until I analysed color chart/diagrammatic representation given in the book Ornamental Origami: Exploring 3D Geometric Designs. If not for the color schematic diagram it would have been rather difficult. Thanks to the author Meenakshi Mukerji.
Under Diagrams, Next to Intersecting planes, there's a link [Assembly guide]. Click it.
Assembly guide also available here:
Difficulty: I would say moderate. Individual unit is easy to make. Assembly technique is also similar to ones I did earlier. Only thing is the color schematic diagram. Follow it and it is easy.
No. of units: 8 x 7 = 56 units
Base angle = 360 / 7 = 51.5 degrees.
No glue used for any of the intersecting planes models. No paper clip used while assembling.