Memoirs are striking chords with readers – last year there was Deepti Naval’s In a Country Called Childhood and now there is Sara Rai’s Raw Umber. One might wonder at the name, taken from a painter’s tube, evoking a shadowy shade. Much of Rai’s memories are shadowed with grief – she begins by commenting on the fact that many of those whose smiles and moments crowd family photographs are no more. But death, she writes philosophically, is a fact of life.