Filed under: Products and services, Consumer experience, PepsiCo (PEP), Marketing and advertising, Target Corp. (TGT), Unilever ADR (UL)The conventional wisdom used to be that shoppers went looking for their favorite brands and that consistency of product packaging assured customer loyalty. Apparently marketers now have decided that good old reliable product packaging is making those products invisible to consumers. According to the New York Times, Pepsico (NYSE: PEP), known for its resistance to label design changes throughout its long history, is now changing some label designs every few weeks. The problem is that, with the internet and hundreds of television channels, it's becoming increasingly harder for marketers to get their messages out to customers. Product packaging now has to do more than simply identify the goods within, but actually ...