No, it doesn't change itself.
That would be revolutionary and worth purchasing.
What the new line by Pampers does is track the baby's pee and sleep with a sensor that attaches with velcro to the front of the diaper. The camera observes the baby's movement, as well as the humidity and temperature of the room. An app pulls all of the data together so that you know what your baby is doing and when. You can see more photos at Design Boom.
Photo: Proctor & Gamble
Besides, anything labeled as "Smart®", is at best, only moderately bright.