Happy Fall from Brier

So I thought to myself "Brier is a tree spirit, meaning that they would be totally connected to nature, right? So would they change with the seasons as well?" then BAM. So now Brier's hair matches the foliage on the trees (it's white in winter, because I think that is also fitting...) but their eyes stay the same because trees, although look different are still the same tree (the base is the same), therefore Brier's "base" would be the same.