For rooms with no windows, this could be an interesting idea. The issue is whether users only have a choice of a fluorescent-light-like light source, or if you can warm up the lighting with a sunlight look. Even better, if you could alter the background to reflect the time of that, that could be a winner. If it's just fluorescents, then . . . nahhh.
There is no window behind this blind! The blades of these innovative blinds are made of electroluminescent sheets, and are designed to create the impression of daylight coming in to a dark room where no window exists. Clever!