[jessewmc]

What TFA is doing is basically the inverse of a digital camera sensor. They're essentially putting a coloured tint in front of each pixel (actually a block of 4 pixels) in a bayer pattern (https://en.wikipedia.org/wiki/Bayer_filter), and using software to mosaic (convert) a colour image into its Bayer components if you will so that a block of four pixels under a green tint for example is lit only with it's green channel, and so on for each colour. You lose some spatial resolution this way of course.