Round as a marble, blue
as the sea
Unless I am brown or grey maybe!
Smile and I shine my window pane.
Frown at me and down comes my rain.
I see all things but nothing I hear.
Sing me to sleep and I disappear.
What am I
I am a window...I am a lamp.
I am clouded, shining and coloured.
I see what you see.
I say much but I have no words.
Set in white, I fill with water and overflow.
What am I?