Another example of the boundless imagination of a child.
"Amma, tell me the colours I need to mix to get white colour".
"You cannot get white by mixing colours. You just have to use the white crayon."
"Oh"
"Acutally, white light has all the colours mixed together in it. When white light is split you can see all the 7 colours."
" Oh i know , that's how the rainbow is formed"
"Yes!"
"Oh Amma, now i get it. Now i know why the clouds are white. The rainbow colours are all mixing and giving the colour to the clouds!!"