Answer:
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
When does Christmas come before Thanksgiving?
What can be seen but never found that only hides in the unwound?
Talks like this, a green wise man does. Guess my clue, you will.
As beautiful as the setting sun, as delicate as the morning dew. An angel's dusting from the stars. That can turn the Earth into a frosted moon.
What is yours but only used by others?