I was involved in a networking chassis shipped to a Japanese customer. The CM had made a batch of units with amber LEDs that were very slightly less orange than

I was involved in a networking chassis shipped to a Japanese customer. The CM had made a batch of units with amber LEDs that were very slightly less orange than spec; the Japanese customer checked them with a calorimeter as part of their hardware receipt checklist. Glorious. I loved that customer even though they were so, so hard to deal with.