Convey The Jazz Age: overwhelming parties, dresses and a variety of colours to symbolise the vibrant and colourful (maybe garish?) lives/culture of people during The Jazz Age.
Yellow and Gold: Money, Money, Money. Oh, and Death.
First off, we've got yellows and golds, which we're thinking has something to do with…gold (in the cash money sense). Why gold and not green? Because we're talking about the real stuff, the authentic, traditional, "old money" – not these new-fangled dollar bills. So you have Gatsby's party, where the turkeys are "bewitched to dark gold," and Jordan's "slender golden arm[s]" (3.19), and Daisy the "golden girl" (7.99), and Gatsby wearing a gold tie to see Daisy at Nick's house.
But yellow is different. Yellow is fake gold; it's veneer and show rather than substance. We see that with the "yellow cocktail music" at Gatsby's party (1) and the "two girls in twin yellow dresses" who aren't as alluring as the golden Jordan (3.15). Also yellow? Gatsby's car, symbol of his desire—and failure—to enter New York's high society. And if that weren't enough, T. J. Eckleburg's glasses, looking over the wasteland of America, are yellow.
White: Innocence and Femininity. Maybe.
While we're looking at cars, notice that Daisy's car (back before she was married) was white. So are her clothes, the rooms of her house, and about half the adjectives used to describe her (her "white neck," "white girlhood," the king's daughter "high in a white palace").
Everyone likes to say that white in The Great Gatsby means innocence, probably because (1) that's easy to say and (2) everyone else is saying it. But come on – Daisy is hardly the picture of girlish innocence. At the end of the novel, she's described as selfish, careless, and destructive. Does this make the point that even the purest characters in Gatsby have been corrupted? Did Daisy start off all innocent and fall along the way, or was there no such purity to begin with? Or, in some