purple blasters do increased damage because they use a rare gas, they are in star wars, but are far FAR rarer than red, blue, or green blasters
Indeed, I think they even show up in the Umbara-arc in The Clone Wars. Howeverm what I meant was, that it is unusual for a seemingly normal stormtrooper with an average E-11 to shoot purple bolts, when they usually shoot red bolts.
