Just a few changes to the original model from Jamboodle's “Spongebob Portal Wall Art” ( https://makerworld.com/en/models/181691?from=search#profileId-200080) that makes it one-AMS unit friendly with 6 colors (changing 2 spools out as it prints).

For colors:

Hatchbox True Pink PLA

Bambu Matte Ice Blue PLA

Numakers Atomic Pink PLA

Numakers Lemon Yellow PLA

Numakers Light Gray PLA

eSun Black PLA

Elegoo Flurorescent Green PLA

SWAP:

start with True Pink, Ice Blue, Black, and Atomic Pink to start with.

-at layer 10: swap out Ice Blue for Lemon Yellow and True Pink for green

-at layer 33: swap out atomic pink for light gray