Not really much else to tell here. I thought it would be fun to make some different seasonal tree colors for Timber since it's basically a slice of the Animal Crossing series you take wherever you smash.
Only the tree model itself is changed. The particle effects are unchanged and i probably go in sometime soon and change them to update this. Also that sapling thing is a great idea which reminds me that I need to recolor the saplings leaves accordingly.
In the future, when such a thing becomes possible, you should try making it so that when Villager makes a tree sprout, the tree randomly picks one of the four available leaf colors (the 3 you made + default tree) and becomes that color. That would be pretty sweet.
Question: Do the leaves keep the modded color while the tree is taking a hit, while it gets chopped, while it is successfully chopped down and is falling, or when it withers?