Zombies aren't known for their picture posting prowess, plus I have yet to post comments like "Hrrr hrrr hrrr" and "Grrraaaahhh". Therefore it should be safe to assume that we are not a zombie.
As for the colour issue; the artificial production of zombies is still illegal in all countries. History has proven that outlawing any practice has never prevented ambitious scientists from continuing their experiments. The posted picture is ample proof that zombies can be successfully produced in the laboratory; they usually have a much richer colour than the naturally occuring variety.