You know, I think I lean towards the blue myself. I find it more impactful, since it brings to mind Palps and Dooku using Lightning in the past. And, I dunno…it might be a little awkward if this movie is about Rey’s journey to becoming “a Jedi,” but then her Jedi lightsaber is the same color as her Sith-y lightning.

Both are fairly minor nitpicks, and you could just as easily argue the opposite (yellow makes her stand out more from the Sith, and it being the same color as her lightsaber allows the yellow color to bookend her arc). I say go with what makes you happy, Hal! Which is probably the yellow. 😉

May the Fourth be with you, everyone!