I would agree that the world portrayed in this clip is brighter and lighter than the reality of that time. It's easy to understand why people would want to immerse themselves in this place. The vivid white costume and sets only heighten the effect. I would expect continued focus on this carefree spirit in further Depression Era films. No doubt that a pre-code version of this film would have substantially different costuming for Ms. Held, and the choice if song would most likely have been much racier and suggestive.