I'm probably going to go with green as well.
My mood is irrevocably tied to the weather (rainy/cold, I'm in a bad mood the whole time, but if hot and clear, the opposite) and I'm very good with animals (I can get even cats to obey me), plants, and I have a thing for insects; they're fascinating, and I never kill them (cant bring myself to kill ANYTHING), but instead if I find one in the house, I have to pick it up and take it outside.
....unless it's a centipede. Then I just ignore it. There's absolutely no point in even trying to catch one of those; it's not happening. They're like Sonic the Hedgehog in bug form.
And finally I love forests and nature trails (though I like beaches, ocean, and the desert more).