trees

Hey, question. When a deciduous tree loses it's leaves for the winter, why doesn't the chlorophyll either go away with the leaves ant rot (or dissolve, or whatever it does), or rot in the tree (where I think the chlorophyll is stored)? How come it's right back again in the spring? Doesn't it get old and rotten by then, like any kind of nutrition would (except water and stuff and cans)? Wait. I just thought of something when I typed that. Is the tree like a tin can? But it's not tin... wouldn't the chlorophyll leak out of the tree bark? You know how when you touch a pine tree, there's sap on your hands? Do they do that with chlorophyll? Huh. Answer:????????