Answer:
Take it and you will lose or gain more than the others.
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
What goes through cities and fields but never moves?
What loses its head in the morning but gets it back at night?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
What never gets any wetter no matter how hard it rains?