No love for the 3mm guys. And, I haven't figured out a way to shove two 1.75mm filaments into my 3mm Wade extruder.

Edit: You know, that's not a bad idea now that I see what I just wrote. What if you could have two different colors of 1.75 feed into the top of a J-Head and mix in the extruder. You could do white and any other color and get a muted or pastel color. There are some obvious issues like back flow but, Hmmm....