Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm

Filaments Used:

PLA Generic black Transmission Distance: 0.3
PLA Generic dark gray Transmission Distance: 1
PLA Generic light gray Transmission Distance: 2.5
PLA Generic white Transmission Distance: 2.8

Swap Instructions:

Start with black
At layer #4 (0.4mm) swap to dark gray
At layer #8 (0.72mm) swap to light gray
At layer #18 (1.52mm) swap to white for the rest.