A new game for the games room.

I will post a puzzle or a riddle or a brainteaser.
Some will be easy, some not so easy.
As soon as someone guesses, (or works it out), correctly, I will tell them they are correct, print the answer I was given and then post a new one.
I love these things and I hope you will too.
Riddle Number 1A man builds a house rectangular in shape. All sides have southern exposure. A big bear walks by, what color is the bear? Why?
Good luck.

Darkness.