Hapkido Betl`s

I practice Hapkido. Today my master explain me what mean every colour of the rank belt`s:
White: mean ground. Is the begin, where everything born.
Yellow: Mean air. like a plant begin to grow up, when you begin to grow up, you need air, oxigen
Blue: Mean water. The water wich feeds to plant
Red: Mean fire. whe the "Be" is next to be, the fire of the life, the chaos burn all
Dambou: the "be" have begun..
Black: Finally the "be" is complete. Now is possible begin to learn hapkido.

Interesting, is not it? :)