As in E Ink's monochrome screens (reviews: $80 Kindle, Kindle Touch, Kindle Fire), a matrix of millions of tiny capsules filled with charged black and white pigments form the basis of the Triton display. Those pigments move up and down in the capsules when current passes under them, and ambient light illuminates whichever pigments are on top. To create the color, engineers laid a 1.9-million-pixel film on top of that layer. Each pixel is divided into quarters of red, green, blue and white. The state of the capsules below determines which colors will reflect light; for example, if monochrome capsules under the red quadrant are white and the rest black, the pixel appears red. Full-color pages refresh in 800 milliseconds or less, and monochrome ones in 120 to 250 milliseconds. In the future, E Ink will produce a display with even faster refresh times, eventually allowing e-paper to play back video.