It really does! I think it's interesting she chose those tropical flavours for a Halloween-themed cocktail, but I guess she liked the idea of the grenadine-"bloodstains" on top. :)
(And probably also because Halloween really only has become a bit of a holiday over here in the last 15-20 years. When the Donald Duck-magazine ran a pumpkin pie-recipe in the late 90's it was the first time I saw an actual recipe for that pie - otherwise it was only something you encountered in American movies. And you were a bit unsure if those big pumpkins were even edible...)