A 16-year-old white boy might typically have fair skin, varying in shades from pale to light tan, depending on sun exposure. He might have light-colored hair, which could range from blond to light brown, and his eyes could be blue, green, gray, or brown. In terms of physical build, he might still be growing, with a range of heights and body types common at that age. He could be wearing typical teenage attire, such as jeans, t-shirts, hoodies, sneakers, or whatever reflects his personal style.