How does the atmosphere on Dark Avenue mirror the orphans' feelings in Chapter One?

The atmosphere of Dark Avenue is one of gloom and darkness. The orphans' lives have been plunged into a gloomy dark place literally and symbolically. The address, 667 Dark Avenue, is a play on the number 666, which many consider to be an evil number. So the effect of gloom and darkness continues to mirror the hopelessness of the Baudelaire orphans.