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. What am I?
I love to twist and dance. Though wingless, I fly high up into the sky. What am I?
When it comes to me you go on red and stop on green.
I work when I play and play when I work
I can fall off a building and live but in water I will die.
What language does a billboard speak?