Overview
A majority of the MacBook family makes use of the unibody aluminum construction first introduced with the MacBook Air. The MacBook family (with the exception of the white polycarbonate MacBook) uses a black keyboard that was first used on the MacBook Air, which itself was inspired by the sunken keyboard of the original polycarbonate MacBooks. The now-standarized keyboard brings congruity to the MacBook line, with black keys on a silver aluminum body.
Read more about this topic: Mac Book Family