Description:
When using Rubidium, tree leaves blocks that are affected by the Better Foliage Renewed mod appear too dark at some angles, leading to poor visual effects, This issue is also very noticeable when looking at leaves from far away. See screenshots below for examples.
I get it that some of the protruding "leaves" should be affected by shadows (like the ones on the bottom), but the rest of the leaves look weird with Rubidium enabled and don't blend with the leaf blocks themselves.

Screenshots:

Without Rubidium

With Rubidium