Then there’s the color blue, which we think represents Gatsby’s illusions - his deeply romantic dreams of unreality. We did notice that the color blue is present around Gatsby more so than any other character. His gardens are blue, his chauffeur wears blue, the water separating him from Daisy is his "blue lawn," mingled with the "blue smoke of brittle leaves" in his yard. His transformation into Jay Gatsby is sparked by Cody, who buys him, among other things, a "blue coat." Before you tie this up under one simple label, keep in mind that the eyes of T.J. Eckleburg are also blue, and so is Tom’s car. If blue represents illusions and alternatives to reality, God may be seen as a non-existent dream.