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 was was before was was was.
I have three heads. Cut off one I become stronger. Cut off two I become ten.
The shorter I am the bigger I am.
I am the kind of nut that is empty at the center and has no shell.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.