I am wondering too, I tried it myself by removing some fsh and vsh buffers files but I didn't come far. I suppose you have to change only a part of one of the files. I would like to see one of these kinds of packs too, but with waving wheat/leaves would be nice. Basically, no shadows.
Not too sure if this is possibly, but hopefully you guys know.
vv The general looks of the water, just w/o the overtaking look of the block shadows. (They can be buggy) vv