Here we see Gatsby's wild parties, where the color yellow is repeated and used to represent the wealth and mood of the party. Yellow is brought up again when describing Gatsby's car, which is also representing wealth. Sophocles uses yellow as a theme to show the outstanding overly luxurious parties, and the yellow "vibe" and mood of the people at his parties.
The lights grow brighter as the earth lurches away from the sun, and now the orchestra is playing yellow cocktail music, and the opera of voices pitches a key higher. (40)
We went about opening the rest of the windows downstairs, filling the house with grey-turning, gold-turning light" (p. 144).
The Green Light is used to represent Gatsby's hopes and dreams. The light is a recurring symbol Sophocles uses to how how he is always wanting something more than all he already has. Gatsby always believed that its possible to go back in tie, but as we see in the first picture time is unstoppable, and to live must be in the present.
The Green Light
Gatsby believed in the green light, the orgastic future that year by year recedes before us... And then one fine morning—So we beat on, boats against the current, borne back ceaselessly into the past.
Involuntarily I glanced seaward – and distinguished nothing except a single green light, minute and far away, that might have been the end of a dock.”