I would agree and say that with classic dark rides, it is easier to hide stuff that you don't want guests to see, just paint it black. But the folks who did Pooh in Tokyo did a good job with daylight scenes, they had to make sure everything looked spot on, but they did it:
The "Under the Sea" scene was tricky to do, but they decided against using a lot blues and greens, over the use of red, yellows, and pure white, which create a sort of "festival" atmosphere, but you don't feel like you are under the ocean. In animated film Ariel was often "lit up" normally under the ocean, but you had these great blues and green in the background which dominated the big picture, and set the tone. Visually you could take a careful picture of Ariel with the black background in the ride and convince somebody that it is a picture of a parade float at night.
I'm a big proponent of mixing incandescent/gels with the narrow spectrum blue/green LEDs to create subtle lighting effects, which I think could have been used to provide a nicer background, and decrease the need for such bright spots on the main characters, without washing out the colors of the foreground. For example:
The bluish background provides (intimates) a atmosphere, a subtle effect which I think goes back to famous paintings like Velazquez's Las Meninas where you have subtle shading and haze to create a space. Compared to what we have here in Mermaid,
Sort of visual clutter (as well as sea plants not found any where else in the ride). This is the "Mardi Gras" Ariel, as opposed to the film which had a decided more aquatic feel, but more importantly atmosphere, the sense of space, achieved via subtle colors, instead of a mostly pure black,
The concept art revealed a beatiful blue/green background with out a lot of the "jazz lights" we have in the real ride,
http://www./wp-content/uploads/2011/02/9_10_WDI_900356114296.jpg
All goes back to paintings, such as Las Meninas below, where a sense of space, and three dimensions was constructed by using artistic techniques, the Ariel we have is almost two dimensional as the black background and flat plants intimate a two dimensional world,