Yeah, I'll have to ask about the nature of their colors. It's always been a question of mine, but it would make a lot of sense that the neonates live closer to the ground and the adults move into the higher canopy. The mimicry of other snakes is a really interesting idea too, though; pretty awesome if they can find evidence to support that.
When misting the snakes usually we weren't supposed to actually spray the snakes, just the paper and the walls/ceiling of the cage; I didn't have that job. But the few times I did spray the cages the snakes would lash at the sprayer/my hand, try to slip out the door if they weren't curled around their bar, etc. Or they would sleep...they didn't always try to pull funny business. Some rumors say they are the snakes you don't ever want as pets (there's that bad reputation) and merely look pretty, some say they're awesome pets, depends which fellow student reptile enthusiast I'm talking to.
In the foreseeable future I won't be able to take in any snakes, but someday one of these might be nice to have!