I re-rendered the album cover in hueforge to also include the orange square and to make a compatible version for the 0.4 nozzle users out there. This model can also be printed at a 0.2 layer height and can be done with 4 colors in 1 print job.

Ensure you are using a 0.4 nozzle, the layer height is set to 0.2 as saved in the 3mf with 100% infill and follow the color changes if need be:

Black until layer 4 or 0.8mm

Grey until layer 9 or 1.8mm

White until layer 16 or 3.20mm

Orange for the rest