" You don’t think about all these colours when everything’s going all right; you’d go mad if you did. You just think about the colour on the top. But those colours are there, all the same. All the quarrels, and the bits of unkindness. And every so often something happens to put a chip right through; and then you can’t not think of them.’ She looked up, and grew self-conscious; "

― Sarah Waters , The Paying Guests