Answer:
Big Bad Wolf blows down the first two pigs' houses, made of straw and sticks respectively, but is unable to destroy the third pig's house, made of bricks.
The book describes the Greasers as having all different types of hair color, some even having blonde hair including Dally whose hair is described as almost white, but the movie chooses to give more distinction between the Greasers and the Socs by giving the Greasers dark black hair and the Socs lighter hair colors.
