"Pure Mathematics is, in its own way, the poetry of logical ideas."

Display stand used in the pictures can be found here 

Requires 4 colours, black, dark grey, light grey, white

I used the following.

PLA Matte Bambu Black Transmission Distance: 0.3
PLA Geetech Dark Grey Transmission Distance: 2.5
PLA Matte Polymaker Light Grey Transmission Distance: 3
PLA Matte Bambu White Transmission Distance: 6

Start with black

Swap to dark grey at layer 8

Swap to light grey at layer 13

Swap to white at layer 20