Answer:
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever. What am I?
I've been argued on my color. Without me you'll die. So many attempts on your life use me so make sure you have many of my White friends.
Four leaves I have.
First I may be your servant's name; then your desires I may proclaim; And when your mortal life is over hold all your wealth within my power.
Though it be cold, I wear no clothes. The frost and snow I never fear. I value neither shoes nor hose and yet I wander far and near. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.