Answer:
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.
Plow and hoe, reap and sow, What soon does every farmer grow?
Although my cow is dead, I still beat her. What a racket she makes!
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
What hangs others yet can unintentionally hang itself?
Keep doing me to avoid lens dryness