Wouldn’t it be weird if we lived in a world in which colours of particular things swapped around?
For example, a world in which the sky is green and the grass is blue. If we imagine that now, it would seem really strange and bizarre.. almost like a weird fantasy kind of world where people walked backwards and boys were girls and girls were boys. Something odd like that anyway.
But really, if that was reality then we wouldn’t actually know any different. We would be born into a world in which the sky was green and the grass was blue, so it would seem the norm and not strange at all. If that was actually how it was, then we would find it really weird to think of having a blue sky and green grass.
Isn’t it strange where your imagination takes you sometimes?