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O.k this may be far fetched, but just imagine. When the house is at normal temprature it would be one colour. Then if the girl/boyfriend comes round for a quiet night, put the heating on and the wallpaper would change to a colour that would set the right mood.
mood changing walls [arora, Feb 17 2002]
Programmable House Paint
Similar notion, but not heat-controlled. [jutta, Feb 17 2002]
[_dragonfly_, Oct 21 2004]
[Laughs Last, Oct 21 2004]
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||Whether it's quite a night or a quiet one.
||Liquid Crystal paint Yay!
||See the chamelon CLothing HB idea.
||New LCD technology makes this easy but expensive... just stick sheets to the wall... (it's now as thin ac a sheet of OHP accetate and bendable)
||If you want to do this realistically, now, you'd just work with different intensities and colors of light on white or neear-white wallpaper.
||I have seen LED array projection systems that do what jutta describes (okay, I have read about them). Intended to set a mood or environment, they paint patterns and colors on a wall or projection surface.
||This exciting idea is currently
being developed. Black and
white electronic ink is already
available and they are working