Is there any existing technology that takes a variety of filaments of different colors (say a CMYK blend), and then blends them in different ratios to achieve whatever color you want?
I had this thought the either day, and I figure it’s either stupid, already exists, or genius.
Prusa just announced a bundle for this feature using 4 tool changers or 7. https://blog.prusa3d.com/prusament-pla-colormix-print-45-color-shades-using-just-five-filament-spools-and-more_137835/