I have a question. Some times I'll have a dream where I'm inside a house or some kind of building. What makes me wonder is why the walls and furniture and basically everything are almost always colored white? I'm not really looking for an interpretation so much as a cause. Interpretations are welcome as well though.

The reasons I came up with are:

It's a reoccurring dream symbol.

It's chosen by default.

I simply don't remember otherwise.

But I've noticed that most always when I'm inside a building, white is a major theme. Any thoughts?