I'm looking for a way to add glow effects in textures, like the enderman eyes, that don't emit any light but are visible in the dark.
Is this possible?
Example given below (from Buildcraft).
If a mob, block, or other object are supposed to do this there will be independent texture layers that facilitate this. It's not something you can add without the game code making it possible. In other words, it's not something that a resource pack can add.