growing in the goo

I was at a furniture store today, known for its cool decorations and little rooms that they set up to showcase their wares. In one room, they had this lovely stone walkway painted on the floor, complete with little mossy rocks and whatnot.

All of a sudden, I noticed an area smattered with black. Was that a shadow, casted by an imaginary tree? Nope...it was the artist's rendition of nothing else but my nightmares! Who the heck thinks this is quaint?!