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 am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
Everyone has me and no one can lose me. What am I?
I get paid when I drive away my customers. What am I?
What is so fragile that saying its name breaks it?
When is it bad luck to see a black cat?