Oh wow, haven't seen this guy in a while, not since he tried to claim the Mine Train would have immensely shorter waits than Peter Pan. I'm a bit surprised he's still here.
The lighting on WDW's version of Mermaid is awful. Amateurish and half-a$$ed are good words to describe the work that went into a lot of it. Particularly poor is the Under the Sea scene where you can see all the exposed structures in the ceiling and everything holding the figures. I finally got a chance to ride it earlier this month for the first time and what a mess they have to clean up. I've not ridden the California version, but black lighting is unquestionably needed and you can tell even from video ridethroughs that it's an immense improvement compared to before (though the ride still needs a lot of work still). Ursula's scene was a scene that had black lighting from the start and is also the best scene in the ride. Not just because the animatronic is good, but because of the lighting.
Even my mother commented on how ugly and distracting it was being able to clearly see all the mechanical structures holding stuff together, and how everything looked like overly shiny plastic toys. And she doesn't even read online comments about the ride nor was she aware it was a common complaint with it, those were just initial impressions and she was actually looking forward to the ride (and she even noticed the lack of proper air conditioning in the building). The sooner WDW's gets the alterations from DCA the better, though they're far from the only thing it needs...