“Fun size” salad packets from Dole would be the most sadistic “treats” to give youngsters on Halloween, almost certainly guaranteeing your trees will be festooned with toilet paper by the end of the night. Alas, you won’t be able to try it out. The image here is a Photoshop job by Adam Padilla, the founder of creative agency Brandfire. Still, Dole had a pretty curious reaction to Padilla’s efforts. Joining in the suddenly hot trend of friendly cease-and-desist letters, the food marketer playfully warned Padilla not to mess with its trademark again without talking to them first. But at the same time, it whipped some of its own “fun size” salad concepts—posting them…