Yellow Birch Forest / Random Birch Variant

A yellow/orange-leaved variant of the birch tree, maybe based off Yellow Birch trees, to serve no other purpose than decoration. Leaves would drop the appropriate sapling.

This could mean a mirror biome of the existing Birch Forest (so an addition of a Yellow Birch Forest biome for example), or the variant trees have a % chance to replace a standard birch tree and add random variation to existing forests.