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 stay where I am when I go off. What am I?
I make everyone blind. You can't see me but I will always come back for you. What am I?
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
I go from house to house a messenger small and tight. Whether it rains or snows I sleep outside at night.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?