As a 3D printing problem the shapes are interesting because they have no straight lines or flat surfaces, all edges and curves, the "bottom" and "top" are sharp points. After considering printing them with support we tried a simpler option first - slice them in half and then glue them back together with acetone vapor post processing.
A bee vision colour space picture by Dr Wilkins, University of Sussex
After successfully printing the colour spaces we used OpenSCAD to create frames ( in purple PLA in the photo above) by subtracting the colour space shape from the frame for a secure fit.
The details are here in his blog which also gives the links to information about colour spaces and what they are.
All the printing was done on our new Lasercut Mendel90, which will be available from our webstore shortly.