I'm guessing you used ribbon cable because it's flexible (by separating the colors). I concluded that from the variety of colors of your wires. I don't use ribbon cable because it's stranded.
legacy parallel printer cable (
You mean like a centronics cable ? (or a ribbon cable?)So I guess the next question is have you ever actually tried colored wire wrap solid wire (26 guage to 32 guage) ?If not, why not ? (it's the preferred wire used by professional techs for prototypes)