Prusa colour mixing blog post
Prusa colour mixing blog post
blog.prusa3d.com
Print with dozens of colors: Our new open-source ColorMix for EasyPrint and PrusaSlicer - Original Prusa 3D Printers

Prusa have shared on their blog the upcoming version of their slicer which is intended to make colour printing easy using CMYKW for 5 colour printers and CMYW for their 4 colour systems