The picture you posted is of a roboworm brand leach. NOT MADE BY HUMAN HANDS but made with an automated system. It is not handpoured or hand injected.
It's just 3 colors, the pearl powders give it the illusion of using more colors.
http://www.ebay.com/itm/RoboWorm-3-Drop-Shot-REAPER-LEECH-FX-EARLY-CRAW-RARE-/380343703722?nma=true&si=TuDdlfOrNCZtWfAFRh%252B6ng6JgJY%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557