would everything take on a different appearance if the sky was purple instead of blue?

Answer 1

Your vision perception is amazingly flexible. It adapts to different lighting conditions and tries to make them 'normal' so there would be differences but you'd get used to them and not notice.

There was an experiment where people wore glasses that flipped the world upside down. After wearing them for a while, the brain suddenly adapted and flipped the perceived image up the right way. When they took the glasses off, the world went upside down for them, for a while. After a few uses, people were able to take the glasses off and put them on anytime, the brain would adapt straight away.

Answer 2

Actually, they would take on a slight purple tinge.

Even with our blue sky, things seem to take on a blue tinge as well, but if you look at objects under a LED light, they look the colour they should be.

Answer 3

Yes. Everything would look a bit closer to purple when illuminated by the sky.

Answer 4

I believe the contrast of things will change.
If the sky was purple, it would mean that the frequency of blue light waves would have changed, thus giving a different colour for each object.

A object is a certain colour because it absorbs the remainder of the colours it does not display. For example, an orange is orange (duh) because it abosrbs other colours which do not form orange (green...)

Therefore, the object's colour will not change.

Answer 5

No, because I wouldn't have known any different because that's how things always would have been.