Answer:
My teeth help me suck.
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead.
I climb higher as I get hotter. I can never escape from my crystal cage.
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.