As always in Kirigami, only one sheet of worked paper makes the 3D object, and it is still intact. The folding of all the forms out and forward from the prime axis leaves a hole where that material was lifted away from the middle of the paper. The piece shown here is attached to an identical sheet behind it. This is done to fill the hole as though the sheet were both cut and uncut, and it enhances the 3D effect as follows.
Turning the piece, one finds many unique angles at which the eye projects from a color streak on the 3D figure, back to its place of overlap on the two background planes. Follow the colored stripes outward as the colors merge in certain frames.
The cubes are sitting in a sunny space where they may be grazed by color streaks. Or, maybe the colors have just streaked out of them because they were opened?