Here is how I printed it in two colors, without having multi material 3D printer:

Sliser: CURA

1. Use layer height = 0.1 mm
2. Set IRONING ON, on the whole object,
3. Go to EXTENSIONS->POST PROCESSING->MODIFY G-CODE
4. Set CHANGE FILAMENT at Layer 4.

Start printing with the filament, that you want for the stones. When prompted, change the filament to the color you want for your fugues.

I'd be happy to see somebody elses creations....

Happy printing.