Simulating Autumn
This movie is praised for its simulation of a New England autumn -- a real accomplishment considering it was shot on a Universal City backlot in the dead of winter. It's possible that some of the colors are real as certain cultivars, most notably of Sweetgum (Liquidambar styraciflua), are specially bred to color well in warm climates and hold their leaves late. But I wouldn't be surprised if the trees were artificial, or spray-painted.
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