After a downpour pretty clouds can appear.
In this picture seem warm, airy, bright, clouds to dissipate so that there is a beautiful clear blue sky emerges. Dark, heavy thunderclouds
A representation of the saying "after rain comes sunshine", which means that it is always possible to get something positive out of a situation, no matter how unpleasant, difficult or even painful it might seem.
Contradictions that this picture represents are:
light - dark
positive - negative (positivity - negativity)
cheerful - depressed (cheerfulness - depression)
airy - heavy