The more frustrating part was when he handed me the new unit to replace my current one he could not see or acted like he could not see the green tint blob when taking a pic...
Assuming he wasn't being a jerk, he might not have been able to see it if he was colorblind (red/green colorblindness affects something like 7-10% of the male population). I'm not colorblind, so I don't know how the green blob looks to someone that is, but it's something to check if you run across the situation in the future.