 Why did Humphrey decorate with a moon, neon roses, and music?
In the ensuing contretemps they emptied his rear pants pockets, got his wristwatch and restored the contents of the handkerchief pocket. It was precipitation peculiar to a dome: feather-light fragments showering harmlessly on the city from time to time. Dome weevils, their metal arms reaching out with molten glass, roamed the huge casserole, ceaselessly patching and repairing. It was this rather than skill that enabled the police to maintain such a tight surveillance on him, a surveillance that went to the extent of getting his fingerprints off the postman's bag, and which photographed, X-rayed and chemically analyzed the contents of his pockets before returning them. Fownes stopped on the porch to brush the plaster of paris off his shoes.
 to seduce Mrs. Deshazaway
 to give Mrs. Deshazaway something that looked like her past  to seduce Mrs. Deshazaway  he was trying to decorate his home uniquely  these were items he had read about from the past