In the book it doesn't say what color house Bella has but in the movie she has a two story White house.
brown
Alice and Emmett: Black Carlisle, Rosalie and Jasper: Blond Esme: Light brown (I think) Edward: Bronze/Reddish Brown Bella: Dark Brown with a hint of red
It depends. Someetimes it's brown, sometimes grey, sometimes something else. I think she bases her favourite color on the weather, or her mood.
she doesnt have a favorite color. she says it changes from day to day. But, at that moment she says her favorite color is brown.