Answer:
I always run but never walk often murmur but never talk have a bed but never sleep has a mouth but never eat.
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 useless when together but useful when I am broken apart. What am I?
I have a gown but I'm not a priest; I have a crown but I'm not a king.
When young I am sweet in the sun. When middle-aged I make you gay. When old I am valued more than ever.
Give it food and it will live, give it water and it will die.