Answer:
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
I am a seed with three letters in my name. Take away the last two and I still sound the same. What am I?
Everyone has me and no one can lose me. What am I?
I stink in living but when dead smells good.
I have thirteen hearts but no body or soul.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.