>>1138nice, but, it's still not tiling…
did you just use inkscape's "tracke bitmap" tool with 26 grey steps? because the rounded corners look like it.
make an svg tiling, especially using inkscape, is near impossible, i think.
it would be easiest to first make the pixel graphics tiling, then retry tracing.
maybe i get around to do that, do you have your version of the pixel version hyperface you used to trace?
essentially something like this:
http://www.instructables.com/id/Make-a-Tiling-Image-in-Photoshop/