Well, If you ask me, it IS a matter of him trying or not. That makes all the difference.
If he were purposely criticizing the guy's geckos and calling them ugly, that would be wrong. To me it seemed that "the moof" was just curious about golddust coloration and perhaps a bit concerned that the animal was happy and healthy. Phelsuma species will often get very dull and dark-looking when they are unhealthy or stressed (or in this case, gravid). It's not uncommon for Phelsuma keepers to point out that an animal is looking "dark" or "dull" as it can be an indicator of health and mood. We know that the animal's dark coloration is temporary and it will brighten up. It doesn't mean the animal is ugly.
Plus, he was very quick to apologize and explain himself. Not to mention he is 14 yrs old (no offense Moof :wink: )
You're obviously very sensitive, Monkey. The last thing I want to do is make you upset, but I think you're overreacting. Normally, I wouldn't have even said anything, but I think you created more tesion than you observed originally.