Command training is a real conundrum for the CC. They don't know that red means left and green means right. They think that red implies some sort of status and will often give the red cup to the pilot with 4 stripes even if he's sitting in the right seat. Then, with the second round of coffee and a different CC who knows the system, you get the other guys cup!
Quel confusion!
But you should see what happens when a blue mug gets put in the catering box by mistake