The division of space by colour is to painting what light is to photography. But what, beyond science, dictates which colour would represent what in our minds? Here’s Prabha’s interpretation of the sky above a set of low-lying houses. The rise of the heavenly staircase to the right corresponds with the incline of the red middle-ground. But what balances it below that layer? Apparently nothing. This is where the artist’s innate sense of counterpoint — a sense that may not be apparent to the viewer at first glance — gets a mature run.