Since the update, I have noticed that Lava glows white when viewed from a distance, as if the texture has faded away and all that's left is the material that causes it to emit light. The lava texture returns once you get close enough. This seems to only be an issue with the natural texture pack, as I have tested it with the default and city textures, and lava displays properly.

how to replicate:
-turn on Natural Texture Pack
-find a pool of lava
-start walking away from it, while it is in your fov

expected result:
-lava still looks like lava

actual result:
-lava takes on a white gradient as you walk away, eventually turning completely white after your greater than ten blocks away.