Answer:
Before Mt. Everest was discovered what was the highest mountain in the world?
Digital white-out.
I shrink smaller every time I take a bath.
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 have every color but no gold.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.