Ambience, or subtle symbolism? [spoilers]

Those who have done the same, you may remember the area up in the skies having a dark creepy looking moon, a luminescent life-size flower underneath it, and also a hidden area just above the fireworks are with a giant blue light bulb. Now I figure the moon is just ambient, but do the flowers mean anything? Also what the heck is the giant moon in the first room of the Interlude about??

I know light bulbs are "soul caskets" but this one was significant enough, large enough, bright enough, and hidden enough to make me think that it was supposed to signify some individual. Any others who are more keen on the story in past games have any ideas who that might be?

If you can pick up these flowers, then yes, the flowers have a meaning. If you cannot, then no they don't.