In any case, those sensors look quite cool!

Although, I would worry about using them for anything where you are really worried about color. This is because of how tv’s work. This sensor tells you the ratio of red/blue/green, so if you stick it in front of a TV the outputs will be almost exactly proportional to the r/g/b ratio that the TV is set for. So far so good, but in this day and age the colors used be a TV are no longer the same. There is a very noticable difference between a pure blue screen with my projector and with a LCD display, red and green are not as noticeable. So you would set the r/g/b ratios the same for all of your gear, but the actual color seen by our eyes will vary slightly depending on the color pallet used by the TV.

But in general, a sensor like that would be a very fun toy! And you get the super bonus points for using USB…