WandaVision might have just tipped viewers off to the different distinctions of magic in the MCU with episode 8. Things kick off in the most recent episode with Agatha Harkness’ MCU origin and her struggling against some blue magic users. Now, viewers will remember that Billy’s powers manifest with the same blue glow. So, there are at least three different colored spell forms rolling around in this cinematic universe. (As you can see below in this post by N.A12) Blue magic seems to be “normal”, purple magic like Agatha’s seems to be dark magic, and Wanda’s newly dubbed chaos magic is red. (No word yet on how Dr. Strange’s orange spells that match that ominous book from Episode 7 factor into this whole thing.) Episode 9 might offer more answers, but the breadcrumbs are being laid with care as WandaVision careens toward a conclusion that is sure to see some spells flying.
#WandaVision So if I understood correctly//////
-Witches: blue magic (probably good(?))
-Agatha: dark/purple magic (evil)
Wanda: chaos/red magic (a myth/the Scarlet witch) pic.twitter.com/y9pqjtdEny