Answer:
He stands beside the road. In a purple cap at tattered green cloak. Those who touch him, curse him.
Steals an event or even a mood. Reveals the truth or shatters it.
I am so simple that I can only point. Yet I guide men all over the world.
We are five little objects of an everyday sort. You will find us all in a tennis court.
What is that which, though black itself, enlightens the world without burning?
I can only be played on a windy day