I also suggest printing the top surface layer as Octagram - adds another layer of cool!!!
Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm
Filaments Used:
PLA BambuLab Matte Charcoal Transmission Distance: 1.6
PLA BambuLab Matte Scarlet Red Transmission Distance: 1.5
PLA BambuLab Matte Ash Gray Transmission Distance: 1.7
PLA BambuLab Matte Ivory White Transmission Distance: 3.2
Swap Instructions:
Start with Charcoal
At layer #8 (0.72mm) swap to Scarlet Red
At layer #14 (1.2mm) swap to Ash Gray
At layer #18 (1.52mm) swap to Ivory White for the rest.