@Anjyoun Still using my MBP 15" from 2011. Logic board died, Apple replaced then it died again. I tried modifying kexts via Arch Linux before the boot process. It was cumbersome and didn't last long enough to be worth it. Then I removed one little transistor and now it works flawlessly!
@rayjizza@Mirarkitty@TheZuza@josefprusa@MattStultz Hm... I've done different color changes in the same layer. But you have to import a multipart model and then specify which filament colors which nozzle.