Once upon a time, there lived a hunter. One day, he heard a noise outside his house, he quickly grabbed his rifle, loaded it with gun powder, and went outside. He saw a bear in front of his house and immediately shot at it. The bear was injured and bleeding, but not dead. The bear ran away and the hunter followed the blood trail. He followed it 5 km south, 5 km east, and 5 km north and finally he saw the bear died of bleeding in front of his house.
The question : What is the color of the bear? Note: Yes, I'm serious on this one, there is a logical answer with reason for this question