How does Phineas from A Separate Peace look?

Some mentions in the book of his physical appearance:

Page 6: "He opened his green eyes wider..."

Page 8: "'...No, you're the same height I am, five-eight and a half...' He weighed a hundred and fifty pounds...which flowed from his legs to torso around his shoulders to arms and full strong neck in an uninterrupted, unemphatic unity of strength."

Page 125: "Still the sleek brown head bent over mesmerized over the list."

Page 150: "He brought his wide-set eyes up..."