If so am loathed to print those because you need an automatic material system and it creates a lot of poop (cut-offs when switching colour)
It think it might be OK to have say 5 white layers then a couple of ink layers.
Also how do you get on with the slicer with fonts.
I found this difficult when printing a dog tag. I sort of got the impression it may be better to have a "gcode font" rather than go TTF->Triangles (STL)->Gcode
However overall: great effort and I love openscad. I love the idea of it I only used it once as I have been busy!