[rented_mule]

I can imagine filament vendors making bundles of filaments with interesting mixes of colors. CMYKW is an obvious one, but there must be other color combinations that will mix in interesting ways.

[MBCook]

They also mentioned that they hadn’t started testing sparkle filament, glowing filament, etc. yet.

I bet people somewhere find some very interesting special effects all this could bring with the right odd combinations.