i tried using other colours and settled with these for the best variation, i didnt try black white and grey but i think that would work well, i found black was too dark as i have lots of dark prints already but would love to see any printed versions.

Print at 100% infill with a layer height of 0.09mm with a base layer of 0.16mm

The Model is was 180x135mm in size but scaled down to 165x123m
You may print at higher layer heights below the Base Thickness of 0.52mm
The Max allowed Thickness is 2.32mm and the Actual Thickness is 2.14mm

Filaments Used:
    PLA Brown  Transmission Distance: 3.5
    PLA Orange  Transmission Distance: 5.5
    PLA Yellow  Transmission Distance: 6
    PLA White  Transmission Distance: 2.5
This print uses 4 unique filaments

Swap Instructions:
    Start with Brown
    At layer #9 (0.88mm) swap to Orange
    At layer #13 (1.24mm) swap to Yellow
    At layer #21 (1.96mm) swap to White for the rest.