Casson family

Saffron's two sisters, Cadmium and Rose, and her brother Indigo were all named from a color chart by their mother Eve, a fine-arts painter. When Saffron, known as Saffy, discovers that her name is not on the chart, it soon leads to another discovery. She has been adopted.
Life in the Banana House, as their home is called, is never dull. Caddy, the eldest, is taking driving lessons from an instructor who happens to be a very attractive young man....

As Christmas approaches, eleven-year-old Rose, the youngest member of the eccentric Casson family, discovers that life is filled with both catastrophic problems and wonderful surprises.