1) My favorite is blue, too. He's probably a thoughtful and nice guy, very likeable and charismatic (due to the color's popularity) calm and jovial for the most part. Still, I can't help thinking he's probably been through a lot of crap in his life, and he's only calm, joyful, and kind because he knows what it means to really grieve--so he's able to take most things in stride. I imagine he's also pretty sensible, y'know? More into comfort and function than impressing people. When it comes down to it, if forced into a confrontation, he'd probably try first, very hard to defuse it... but waking his temper is probably a very, very bad idea.
2) A real animal? Well, I don't want to pick the same thing as you twice, haha. Let's see. I was always really fond of white tigers when I was little... I think a white tiger, as a person, would be a serious person. Not much smiling or laughing. Don't know about male or female, but I expect they'd be tough as nails. Military, maybe, or an athlete, but not much of a team player. They'd want more to be the best of the best, and a leader, which wouldn't translate to being friendly, but still valuable in their own way.