[E. Pluribus Unum]

Looks like the article is about some sort of "mood-tower" with the ability to change color, not the screen.

Does it use the microprocessor to do this? If so, the micropressor is the enabling, patentable invention.

A mood senor is just a parlor trick.

[Textide]

It's not a question of how the thing is controlled, it's the thing itself: A case that can change color. Whether it changes with temperature, time, the microprocessor, or the relative humidity is irrelevant.