If a solid-coloured Water brick (I tried 32x) is set to Undulo shape FX, and then to Stable shape FX, (Won't happen from Water -> Stable) the sides of any solid-coloured bricks touching it will be removed as if the brick had faces on those sides through the culling/brick grid method. Setting the brick to a different shape FX stops this effect, until set back Undulo -> Stable.
I think someone [accidentally] has an example of this on the Block Party server (as of now, with the 'desert' theme) - diving in the water in Monk's 'quicksand' build area will allow you to see through connected bricks.