The tone towards the end of the story, when the narrator was running from Doodle and yelling at him to catch up, was hateful, because he was yelling at Doodle for not being able to catch up with him. However, the tone then changes to apologetic and mournful, because the narrator regrets yelling at Doodle and feels bad for causing his death, and he becomes sad because his brother is gone.
In this scene, the author uses words such as, "glistening", "bordering", "flared", "downpour", "buried", "limply", "brilliant", "ropy", "vermilion", "sharply", "fragile", "pounding", etc, to describe the intensity of the storm and the tragedy of Doodle's death at the end of the story.
At the beginning of the story, when the author describes the setting, he says, "The last graveyard flowers were blooming, and their smell drifted across the cotton field and through every room of our house, speaking softly the names of our dead." He also says, "the oriole nest in the elm was untenanted and rocked back and fourth like an empty cradle". These are two examples of the imagery that the author uses to describe the beautiful setting in the time between summer and fall.
The style of "The Scarlet Ibis" is a narrative, or story, with some dialogue between characters. It is intended to convey a certain theme and to entertain the audience.
The theme of the story is to not push people to do things that they can't control, because in the end it will hurt them and you. Another theme in this story is to not let your pride about something get in the way of the people that love you and care about you.