I saw your blogs after playing around with blue and black Frixion pens. A few observations:And in a later mail......
1. Ink color is indeed not great...but these are still so much nicer than those erasable ink pens from when I was in high school...which may have been when you were there, but never mind.
2. I held a match up to some text written with Frixion, but not close enough to burn the paper. The ink actually doesn't disappear; it turns white. I confirmed this on a dark piece of paper.
3. I then took some of the text that I erased with the heat of the match and chilled it thoroughly by holding it firmly against a bag of frozen asparagus. It turned gray again--which is about all the "black" ink ever was.
These are completely useless things to know, but I thought you might find them mildly amusing.
I should now add that for the heat it is simpler to hold the paper with the Frixion ink next to a standard light bulb (it doesn't have to touch) to erase it. Also, to make it reappear, if one is patient, you can just put the paper in the freezer--though it can take hours to get the ink to come back.One thing you got wrong Jonathan - these are not completely useless things to know, these are ESSENTIAL things to know for all of us Pen Addicts out there! Thanks again for sharing.