I Usually Wear A Yellow Coat Riddle

Riddle: I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go. What am I?

Answer: A pencil.

Source: https://www.riddles.com/index.php/478

I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
What am I? — I usually wear a yellow coat Riddle by Anonymous v1.

Riddle: I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
What am I? Answer: A pencil. — by Anonymous v2.