Using an orange-handled coffee pot to denote decaffeinated brew dates back to 1923, when General Foods first introduced Sanka. As a promotional gimmick, they provided restaurants and diners with orange-y pots that matched the orange packaging of their decaf coffee.
DID YOU KNOW? Marlon Brando hated memorizing lines so much that he posted cue cards everywhere to help him get through scenes.
He even asked for lines to be written on an actress's posterior. (That request was denied.)