Not yet, but hey, it would be easy enough to do those too.
If I can find the time -- they'd be much harder work, and I shudder at the thought of four new sets of standards and intro screen images (yes, I'm picky, I like making those different with each style).
Many of the interactive objects I took by snapshotting individual frames from the game itself on the Genesis emulator. (I know.... it was a heck of a lot of work. But I wanted to do it.) For some I used the Cheapo ones. (I actually prefer the Cheapo crystal, column and pink style exits to the originals. And getting all the frames for the trap objects would have been far too much work even for me -- though I did get the dirt style traps from the Lem-Dirt style by making levels with a dozen of each so I could snapshot several frames at once.)
I'm fairly sure there are almost no terrain pieces missing. I couldn't work out from the levels I studied exactly what the individual unit is for the curly ground terrain in the pink style, but I hope that the pieces I included are adequate. I couldn't find any levels using the Q and Z from the fire style lettering, so for consistency I kept the Cheapo graphics for the entire alphabet, but included alongside them the X, exclamation mark, and arrow from the original.
Anyway, if there
are any terrain pieces missing, I think the extra ones I've included will more than make up for it.