I recently purchased a set of pen adapters for my Cricut so that could use pens other than the Cricut brand pens. The Cricut pens are a bit expensive at around $10 for a set of 5. There were 6 adapters in the pack. Of the 6 I have Bic Mark it, Sharpie ultra fine point and Crayola super tips. I decided to give them a try to see how well they worked.
The wavy lines you're seeing on this is because after I got done coloring it I ran it through my paper crimper.