Simple Icosphere and Cube with positive X, Y, and Z labeled to test multicolored filaments. The filament used in the image is found on amazon: ZIRO Matte 3-in-1 Color Change PLA Filament Neon(https://a.co/d/fA17bS8).
In the image I printed the Icosphere at .28mm extra draft and the Cube at .2mm standard.
Feel free to change settings to get faster prints.
Great reference for how dual/tricolored filaments print and how orientation affects the color.
I also have this on Maker world here: https://makerworld.com/en/models/980557#profileId-954096
The author marked this model as their own original creation.