Print at 100% infill with a layer height of 0.08mm with a base layer of 0.1mm

The Model is 150x150mm in size

Start with Black
At layer #11 (0.9mm) swap to Red
At layer #18 (1.46mm) swap to Purple

In 4-color printers, I create a pause before the yellow, for example, and change another color like red, which is no longer used, so you can have 5 colors.
At layer #20 (1.62mm) swap to Yellow
At layer #24 (1.94mm) swap to White
At layer #31 (2.5mm) swap to Black for the rest.