Answer:
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
Take one out and scratch my head, I am now black but once was red.
What flies without wings? What passes all things? What mends all sorrow? What brings the morrow?
What has to be broken before it can be used?
Name for zenith
I always have to work with something in my eye. What am I?