Good to see your willing to put a good amount of effort into this
Still have a couple of issues tho, if you're willing to go that extra mile.
I'll sidestep that whole hue shift issue, since I think there are more important stuff to improve on.
Colors: You're still not taking full advantage of your pallet. On my edit i used the near-white from the teeth to make up some really bright highlights here and there, to make it look slimy. Also, you still got an extra color in the mouth (the near-black) you can use to further improve the feeling of depth with.
Shading: I like the fact that your edit looks less metallic, personally, I think you went a bit over the top though. The rough shading somewhat resembles dithering and is not suited for the piece if you're going for a slimy look. Overall you should make the shading more smooth, it looks kinda random and jagged and really reduce the overall quality of this piece.
Design: The mouth should be integrated much more in the overall design. It looks like someone pooped a mouth on him
Otherwise, a good improvement from the first draft
/vedsten