The Flash: Here's Why Iris' Purple Lightning Matters

Iris (Candice Patton) got the chance to walk a mile (or technically run several miles) in Barry's (Grant Gustin) shoes Tuesday night on The Flash, but you may have noticed one key difference in her and Barry's speedster abilities.

While Barry emits yellow lightning in his wake, Iris trails purple

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Source TVGuide.com: Breaking News http://ift.tt/2pgjP99