A Drowning Incident

So while i found the ending of this story to be very strange, and at this point indecipherable i did notice some of the things Rather told us to look for. One of the biggest things i noticed was the color, and I really think I am onto something here. He stepped on the cricket and out came some thick white liquid. The puppy had a white belly, green guts and i believe the black hairs were mentioned a few times as well. I also noticed he describes the planks as a metallic grey and the boy's face at the end to have grey patterns on it. Color is EVERYWHERE in this story and i think each has its own meaning. White, i believe is a given, innocence. He feeds the innocent cricket to the BLACK widow... The puppy has a white belly. When he discovers the dead puppies his eyes were described as wide and white. So heres a good question then, what does the green represent? The grey could be emptiness, so why is the little pier a greyish color? Anyway, i really think there is something there with the color and I'm excited to discuss this more in class. I know theres also something there with the boy killing the cricket, and then finding that someone killed the puppies, some kind of dual storyline going on there. But most of all I'd like to know who "he" is at the end of the story. Yes so... tell me if you have any ideas.