There will be two versions of the tool — one is a pen, which resembles a CMYK version of one of these, with a chamber containing the printer ink cartridges, which are mixed together to produce the shade you want. The second one is a stylus which works via Bluetooth, connecting to your cellphone or tablet via an app and displaying the color you chose on the screen. It's a cool toy — and my money's on the stylus being the more popular version. Why? Three words for you: printer; ink; cartridges. Both pens will come with 1GB of storage, enough to store up to 100,000 colors.