Doing No Harm

Riddle: Only one color, but not one size, Stuck at the bottom, yet easily flies. Present in sun, but not in rain, Doing no harm, and feeling no pain. What is it?

Answer: It is a shadow!

Source: https://www.riddles.com/index.php/765

Only one color, but not one size, Stuck at the bottom, yet easily flies. Present in sun, but not in rain, Doing no harm, and feeling no pain.
What is it? — Doing no harm by Anonymous v1.

Riddle: Only one color, but not one size, Stuck at the bottom, yet easily flies. Present in sun, but not in rain, Doing no harm, and feeling no pain.
What is it? Answer: It is a shadow! — by Anonymous v2.