As a suggestion from a colleague, I have remixed the designs of these Sharingan keychains so that we have 9 different models of spinning discs for the BambuLab A1 series

You can see that they are two colors in relief and with a simple color change per layer, so they do not require a lot of printing time nor do they waste so much filament with the change.

Even if all 9 are on the same plate, they are separated and you can print all of them or just the one you like the most.

Since the color change is per layer, in the previous image it will only appear red, but it is two-color.