doing alot of searching i've came to the conclusion that since the artist kudo loves music english or american and that' pop music is very popular in japan; that the bleached hair style came from his love of 'pop'. Thus the title. Also check out zombie powder! His first title that was first released in shounenjump 4 volumes of goodness.. but the ending makes u wonder... seeing the ending isn't really a ending.
hope i brung so type of conclusion to the reason of the title.