RGB.

Red/Green/Blue: To you, the world is logical. Everything happens
for a reason, life is scientific. You like to
find solutions. I doubt you needed to take this
quiz in order to realize this.

What color do you see the world in?
brought to you by Quizilla

I totally expected the quiz to be so cliche, and make me grey or blue or something, only to be hit with what I've always been saying: whether the glass is half empty or half full depends on its prior state. (Of course, you must pick one even if you don't know, in which case I tend to say half full, because in general, I think the default state is empty. But anyhow.) So yeah, nice that the quiz picked up my analytic side over my introspective depressing side.