Great pen! I love it because it does what it says it will: erase with frixion.
I've tried other forms of heat too, and it works, even putting in the freezer
makes ink come back. However, this has a downside. I experienced some minor
fading when I put things written with the Frixion in my pocket, enough to where
it would bother me. However, it's a great pen overall, I just wish they would
switch the eraser to the cap so you don't have to take it off every time to
Blue is likely the second best color; blue-black is a more full, deep color.
I was quite disappointed by the pen. The lead that it supplies does not feel
like normal lead, and the eraser is downright bad. It cannot erase completely as
with other mechanical pencils or even the Pilot Frixion Point 04. However, the
pencil is quite long, so it's good for people with large hands, but still isn't
too heavy. Would not recommend buying.