Swap Instructions:

Start with Black

At layer #8 (0.72mm) swap to Red

At layer #12 (1.04mm) swap to Blue

At layer #15 (1.28mm) swap to Orange

At layer #18 (1.52mm) swap to Yellow

At layer #21 (1.76mm) swap to Beige

At layer #23 (1.92mm) swap to Purple

At layer #24 (2mm) swap to White for the rest.

I used 8 colors with 2 ams, but you can pause printing and change the new 4 colors for the ams and continue printing.