Finished some preliminary work on the GUI since my usual Minecraft server is misbehaving (we suspect ddosing,) so I'll also some pretty pictures up as soon I can, as I wasted the rest of the day figuring out the CTM features for Optifine. Lots of fun things I can use on my texture pack, but the sticky widget will be the use of block metadata that forces me to try and do a combined ctm.properties file.
We'll see how that experiment goes.
UPDATE:
Okay, haven't gotten around to playing with the ctm.properties file yet, but here's the stuff I whapped up for you.
I made two GUI for the altered version, didn't know if you felt right with the dark colors. I figured that the best feel would be a Nether-like color, and had to source out that lovely squishy meat texture for the "soul tank." The inverted blue flame color felt right for an evil thing, as it's pretty much burning souls by nature. I also swapped in some little things that I borrowed from my texture pack that I use and upgrade for private use to fit better. (Really, an arrow, Minecraft? A line of fire always works better for a furnace/smelter, IMO. )