In "The New Jersey Sphinx" in Dr. Thorndyke's Case-Book by R. Austin Freeman, Thorndyke went to a porter to know the vacant chambers to let, and asked him whether it's quiet:
"Yes, pretty quiet. There's a metallurgist overhead—Highley—used to be Burt & Highley, but Burt has gone to the City, and I don't think Highley does much business now."
"Let me see," said Thorndyke, "I think I used to meet Highley sometimes—a tall, dark man, isn't he?"
"No, that would be Burt. Highley is a little, fairish man, rather bald, with a pretty rich complexion"—here Mr. Larkin tapped his nose knowingly and raised his little finger—"which may account for the falling off of business."
I found that "fairish" may mean "blonde or light skinned", but what's the meaning of "rich complexion"?
Does it mean "rich appearance"? or "vivid skin color"?
And why should that account for "falling of business"?