Answer:
Sometimes black, sometimes white, I have veins but no blood
What flies without wings?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
Which button does not function when being pressed?
I scribble forms of the finest letter, And repel elements of the harshest weather. I am an arrow-aimer and a dust-breaker.
The warmer I am the fresher I am.