New Forest Biome: Dimmed Forest

What if there was a biome that spawned on the surface called the Dimmed Forest.
It could have these big trees with darkened oak green leaves that carry glow berries and similar to the lush cave have a new glowing mushroom that can spawn in the dimmed forest or dripstone caves called the "Spore Shroom" a mushroom varient of the Spore Flower that glows a dimmed yellowish blue that can be used for blue dye or possibly spores that can be held by the player and can be used like a egg or a snow ball. The trees that spawn here are similar to the dark oak forest trees though they are taller by 14 or 12 blocks that carry the new glow berries that fall down avalible for the player to grab and eat. (Inspired by the lush caves) Maybe the allay could spawn here in little homes that come out the trees as a structure.