Finally, this can work with something I've been trying to accomplish! If anyone comes after this review, you CAN change the color of this asset using another plugin! I did it, and it makes this asset all the better.
Link to how to change the color:
https://hub.virtamate.com/threads/changing-particle-effect-colors.39617/
Perhaps this can even help this feature be added to the asset itself. Good luck everyone!
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After that, add a custom unity asset in the main menu bar .( blue unity icon)
Select "pp_coldbreathset_v01.assetbundle" from "select File" in the "Asset" tab at the top. At the bottom of the same screen, select the asset you want to use from the "Asset" menu.