Is there a way to make a "multi-layer brush" or something like that?

[Ellye]

For example, I have a brush that is a clipart of a tree. I'll paint it many times over on an image.

But each time I paint it, I'll also need to later separate the trunk, leaves and shadow each into a different layer.

Is there anyway to make a brush that automatically paint into three different layers, a different part of the brush into each of these layers?