Perhaps it is an allusion to one of George Cattermole’s works, or his particular stylistic treatment of the subjects/objects he painted?

From Encyclopedia.com:

Cattermole, George

1800-1868, English watercolor painter and illustrator. His subject matter was varied, and his works were popular during his lifetime. He painted picturesque scenes of antique subjects in a romantic mode. He made illustrations for some of Dickens's works, including Barnaby Rudge. Cattermole is represented in most of the important British galleries.