This is a version of my Be Mine rainbow created in Hueforge with a white background and frame. No AMS needed, all color changes are done by color swaps. Do not resize on z or colors will not be accurate. If needed, resize on x/y only.

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

Filaments Used:
PLA+ Sunlu Black Transmission Distance: 0.6
PLA PolyLite Purple Transmission Distance: 0.5
PLA+ Sunlu Blue Transmission Distance: 4
PLA BambuLab Basic BambuLab Green Transmission Distance: 8
PLA PolyLite Wine Red Transmission Distance: 1
PLA PolyLite Orange Transmission Distance: 7.5
PLA BambuLab Basic Yellow Transmission Distance: 6
PLA+ Sunlu White Transmission Distance: 5

Swap Instructions:
Start with Black
At layer #13 (1.12mm) swap to Purple
At layer #18 (1.52mm) swap to Blue
At layer #23 (1.92mm) swap to BambuLab Green
At layer #28 (2.32mm) swap to Wine Red
At layer #31 (2.56mm) swap to Orange
At layer #32 (2.64mm) swap to Yellow
At layer #35 (2.88mm) swap to White for the rest.