How do those pens change color when you hold them?

Some of these pens, like the one I am looking at now, are blue and then change color to white where you hold it (after a certain amount of time). How does the pen change color? What in it is actually making the color change?

I have never seen one but I imagine it is the heat?..

I was going to suggest that perhaps you are gripping it too hard, but then I saw that the word was p-e-n-s. As to that, I have no idea.

After it settles into your hand, your pen gets very comfortable and a nice warm mood settles over it. It is trying to tell you it likes you.
(Of course, maybe you were asking about the technology behind it.)


Tom~

KalEl - nice one!

Tom - you’re priceless, as usual.

Nice juxtapositional zingers here – the newbie and the regular. Gives one hope for the future.