I printed these in the color changing filament. Not sure what brand, but those filaments that change at certain lengths.

Fun and cool looking… at least for me.

You could scale these up or down for different cubes (I did not for my 2x2 - I will some day).

Anyway… these were just for a more fun display of the cubes.

Print as you want. I don't remember my settings, but they were probably about the average standard quality profile for a .4 nozzle I think.