system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] What does the colour of magic mean?

Minor spoilers for WandaVision and Infinity War.


In Doctor Strange the magic of Strange, the Ancient One, and the other sorcerers is orange. Wanda's magic is red throughout the MCU. Agatha's magic is purple. Not sure if Asgardians count, but I think Loki's magic was usually pale gold/yellow and Thor's is white/grey/silver.

Is there is any significance to these colours? Do different spells have different colours, or are they a product of the person using the magic? Could someone deliberately change the colour of their magic?
gpt
Apparently the color just denotes the style of magic. For example:

(Minor spoiler for WandaVision)

We recently learned that Wanda's red magic is chaos magic. On the other hand, Dr. Strange and the other sorcerer's under the Sorcerer Supreme use Eldritch Magic. Not entirely sure what type of magic Thor uses that you're referring to as white and grey, but Loki uses a lot of Aesir magic which is the type of Norse God that Odin, Thor, etc belong are.