I created this based on a Perler bead model and have modified layers so that each color finishes on a different layer height. I can almost guarantee that the stl file is too big for all but the largest printers so do the following:
Resize the print using preserve scaling to fit to your bed.
Turn off preserve scaling and change the z-height back to 5mm.
If you do not do that, the layers will not print correctly. Print using the following colors:
0-2.8mm: Green
3.0-3.6mm: Brown
3.8-4.2mm: Tan or pale yellow
4.4-5mm: Gold or bright yellow
The 3MF files for the Prusa MK3S and Prusa Mini are already set to go with these switches built in.
I haven't tried to print this out myself just yet, so I'd be happy to see your version of it!
The author remixed this model.