Grim Glow Lichen (Glow Lichen variant for below y level 0)

Being that the overworld below y level 0 will most likely be a more dangerous region, the creatures and plants that inhabit it will likely have to be tougher to survive such a place. As a result, Grim Glow Lichen could be a tougher variant of Glow Lichen that only spawns below y level 0 on Grimstone, with normal Glow Lichen remaining above y level 0. This plant would be darker in color but have the same functionality as Glow Lichen except for one thing. Grim Glow Lichen would be like Berry Bushes in that they would have thorns that prick the player. This variant could benefit certain players who want to make inconspicuous traps, harmful/dangerous lighting arrangements, or would just like a variant of Glow Lichen that could be “interchangeably” used with the original plant for aesthetic purposes. Other functionalities could be implemented, as this is just a rough idea that would add some more unique characteristics to the overworld below y level 0.