If daylight is filtered and the room light becomes colored, the whole dynamic of daylight becomes visible, especially when looking from the outside into the room. When a magenta color filter (LEE 332) is used, the perceived color changes from bright magenta in direct sunlight to bluish violet in indirect twilight.
Due to the absorption of green light, our vision becomes bichromatic (red and blue) instead of trichromatic (red, green, and blue) and the perceived color palette is correspondingly limited (green is missing).
But if you stay long enough in the room, magenta appears to wane and if one looks at the exit or an open window into white light the green color emerges as afterimage. The same phenomena can also be induced with colored light sources.
This installation clearly demonstrates the selective adaptation of our color receptors and the corresponding selective attenuation of our color perception with corresponding change of our white point. It is particularly impressive that magenta can be perceived simultaneously as ambient light and green as afterimage (when looking outwards at white light) and not consecutively, as is typical for afterimages.