When we go deeper into the book you see he starts to rebel with being in the wrong crowd and doing the wrong decisions like doing drugs and stealing. He changes back to his past self and get a scholarship and graduates with a degree in journalism.This affects the things his mother had to do his little sister's view on him and the best of all it made him into who he is today by giving him an ability to speak of his rise from the dumps/lowest of his life.
The voices also add different description for different moments meant for both good and bad events and to add humor in normal situations that happen in everyday events. The narrator uses description and humor to show the mood if it's serious and dreadful to a normal and casual to sad and disappointing scene of someone losing their loved one. Mother is very tough on her kids but loving to a point they understand she really loves them but they sometimes do things that will never go unrecognized in the real world. They also you subtle commas, periods, ellipsis and many other formal writing punctuation to provide the dramatic emphasis which makes "The Color of Water" such a great book to read.
James McBride's Family