This whole song is a cryptic shoutout to the Steely Dan fans who had two active internet forums at the time it was written. One was the "blue book" ( http://www.dandom.com/bluebook/ ) the other was referred to colloquially as the "yellow book" ( http://www.banyantrees.net/ ) (fwiw, it's no longer yellow). So "Green Book" is a mash-up of yellow and blue! "The new cashier looks like Jill St. John" refers to St. Alphonso, forum moderator at the yellow book. Lots of the other lyric elements are like that...and guess whose music is being referred to as "anachronstic but nice"? :-)
This whole song is a cryptic shoutout to the Steely Dan fans who had two active internet forums at the time it was written. One was the "blue book" ( http://www.dandom.com/bluebook/ ) the other was referred to colloquially as the "yellow book" ( http://www.banyantrees.net/ ) (fwiw, it's no longer yellow). So "Green Book" is a mash-up of yellow and blue! "The new cashier looks like Jill St. John" refers to St. Alphonso, forum moderator at the yellow book. Lots of the other lyric elements are like that...and guess whose music is being referred to as "anachronstic but nice"? :-)