Grayscale version is the bamboo file, for the blue version change to the following values.

Blue version:

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

Filaments Used:
PETG IIID Max Navy Blue Transmission Distance: 2
PETG IIID MAX Blue Transmission Distance: 3
PETG TPOIMNS Light Blue Transmission Distance: 4.5
PETG JAYO White Transmission Distance: 6

Swap Instructions:
Start with Navy Blue
At layer #13 (1.12mm) swap to Blue
At layer #21 (1.76mm) swap to Light Blue
At layer #29 (2.4mm) swap to White for the rest.