Or if you think it would look cooler. I would also like a dark texture (close to black but not pitch black) with spotches of ectoplasm green in it, still in the form of a grainy salt.
Hmmm... okay, http://i468.photobucket.com/albums/rr50/Alaisiagae/Mod%20Screenshot%20MW/Misc/nether_salts_v1.jpg? Just an initial attempt, so if it doesn't fit the bill, I can try some other things.