I've just picked up a copy of J.D. Salinger's Catcher in the Rye, realizing that it's something that I've never read before and should probably get around to doing. I came across this section in chapter five:
People with red hair are supposed to get mad very easily, but Allie never did, and he had very red hair. I'll tell you what kind of red hair he had. I started playing golf when I was only ten years old. I remember once, the summer I was around twelve, teeing off and all, and having a hunch that if I turned around all of a sudden, I'd see Allie. So I did, and sure enough, he was sitting on his bike outside the fence—there was this fence that went all around the course—and he was sitting there, about a hundred and fifty yards behind me, watching me tee off. That's the kind of red hair he had. God, he was a nice kid, though.
The Catcher in the Rye, chapter 5
I'm not quite catching on to how the anecdote here has anything to do with the color of Allie's hair. What does this have to do with "what kind of red hair he had"? What am I missing here?