For Halloween, Starbucks is going green with its Franken Frappucino.This is @Starbucks new secret Halloween drink. http://t.co/nbcaJzm23p #FWx pic.twitter.com/Xx55AOlBDP— Food & Wine magazine (@foodandwine) October 29, 2014Only available at select stores through Halloween, the Franken Frappucino is a green tea Frappucino with peppermint syrup, white mocha, java chips, and a mocha drizzle, the Los Angeles Times reports.