one of our clients is a local city who's starting up a lifeguard campaign. they wanted to make a color adjustment to their existing logo to use on their new rental beach chairs so the people in charge of renting the chairs could distinguish them from the other standard chairs, which were identical except for this logo.
we sent the client his logo in about eight different colors, and he picked a burgundy version. he told us to send it to the guy who was going to put the logo on the beach chairs, so we did. the beach chair guy took the initiative to use photoshop and put the logo on a picture of a blank chair to show the client what it would look like.
he named the file "red background.jpg" and sent it to our client. this morning, our client called us in a fit, saying that the logo on the chair was red, not the burgundy logo that he had approved. i pulled up the logo i sent him and compared it to the one on the chair – they were identical. i then went into photoshop myself and made the left half of his logo actually red and left the right side burgundy so he could see the difference.
the chair guy then contacted our client and told him someone had accidentally mislabeled the file "red" instead of "burgundy", and he resent our client the original file he had already sent before, but changed the name of the file to "burgundy background.jpg".
the client loved the "adjustment" and approved the project.