Answer:
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
I lose my head in the morning and regain back it at night.
I climb higher as I get hotter. I can never escape from my crystal cage.
What is deaf, dumb, and blind, but always tells the truth?
I soar without wings I see without eyes. I've traveled the universe to and fro. I've conquered the world yet I've never been anywhere but home.
I am a mini solar powered computer.