Answer:
What is so delicate that saying its name breaks it?
You throw me out when you use me and take me in when you are done. What am I?
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
I spend most of my day eating white. When I am quick enough I get rewarded with fruit and something blue. In a dark room with blue walls I run from the ghosts that roam the halls