Sorry to pile in here...philosophy background coming into play ;-) "Mills chose the symbolic colour of white as the vinyl colour in the design to represent an unknown destination in space and/or time"
This is actually justified conceptually by thinking about a situation where you are in space which is completely white - no other information is being received by you. You therefore have no sense of change in your environment other than your inner sense of space and/or time, and so in an limited sense these things cease to exist. you would also have no sense of change, and no other information if the room was completely black or blue or green or yellow or red or orange. this is not philosophy.