Blonder, Greg2019-07-102019-07-101993-06-101993-03-18Greg Blonder. "Chameleon apparatus housing unit." Patent Application EP-0,564,127-A2.EP-0564127-A2https://hdl.handle.net/2144/36504An apparatus housing that can have various exterior colors enabling the apparatus which the housing surrounds to be aesthetically pleasing in any environment in which the apparatus is located. Additionally, the housing unit provides a visual indication of information by changing color. The housing has a transparent substrate (6) as the exterior layer. Under the substrate is a layer of electrically switchable light modulating material (12) which is sandwiched between two electrically conductive layers (8, 10) that are connected to a voltage supply (18). A color forming means (30) is in contact or close proximity with the electrically switchable light modulating material and a background creating means (2) provides the alternating color for the visual indication.Patent429682