At Gatsby's party, Nick notes that the people and elements of Gatsby's home "are gaudy with primary colors ..." How does this contrast with Daisy and Tom's home? What is F. Scott Fitzgerald suggesting with this contrast?

White and red are the colors of Daisy and Tom Buchanan's home. The red symbolizes arrogance, selfishness, and lust as the white symbolizes bleakness. Gatsby's home is full of primary colors--yellow symbolizing liveliness, energy, and spirit; blue symbolizing confidence, trust, and loyalty--red, similarly to the Buchanan house, symbolizing arrogance, selfishness, and lust. With this contrast, Fitzgerald is suggesting that though both Gatsby and the Buchanans are arrogant, selfish, and lustful, Gatsby is a vibrant character full of soul and genuine personality, whereas the Buchanans are hollow and bleak.