Printed on a Printrbot Jr. V2 with white PLA colored rainbow with Sharpie. .25 mm layer height. Worked beautifully!
looks great with the colors!
you said colored rainbow with sharpie? SO basically you took sharpie, and then marked the white filament, then printed? That is so clever! I might steal that idea.
Well, you would be stealing it from someone who stole it from someone else! As you can see, darker colors seem to work better. Make sure to get a decent coating of ink on all sides of the filament to make sure it shows up.