A couple of years ago, a group of entrepreneurs successfully Kickstarted a little something known as the Chameleon Pen. In a nutshell, it's an art pen that changes color tone as you draw – for example ...

Confession: I have a desk drawer filled with gel pens in a variety of colors (think neon pink, shimmery gold, deep black and beyond). I use them to write birthday cards for my friends and for my ...

The Chameleon Pen is so-called because it's capable of producing multiple color tones and seamless blending, all using the same single pen. Therefore, the ink which it produces changes color tone in ...