"You are old, Father william," the young man said,
"And your hair has become very white;
And yet you incessantly stand on your head--
Do you think, at your age, it is right?
"In my youth," Father William replied to his son,
"I feared it might injure the brain;
But now that I'm perfectly sure I have none,
Why, I do it again and again."
"You are old," said the youth, "as I mentioned before,
And...
A property-instance must be spread out in space, or it is not clear how a colour nature can be present, but then it has to be a complex entity, and tropes are supposed to be simple entities.
A colour-trope cannot be simple (as required), because it is spread in space, and so it is complex
J.P. Moreland (Universals [2001], Ch.3)