Seemingly reversed naming of debuffs relative to icon in P12S

[Deathcream]

In "Anabaseios: The Twelfth Circle (Savage)" (Referred to as P12S in title due to space limitations) the debuffs applied by the cast "Engravement of Souls" have names & descriptions opposite both the typical lore convention (to my understanding) and previous mechanic convention.
In specific "Umbral Tilt", "Umbralbright Soul" and "Umbralstrong Soul" have light blue/white icons. the debuffs "Astral Tilt", "Astralbright Soul" and "Astralstrong Soul" have dark red/black. To my understanding Astral is typically meant to represent light while Umbral is meant to represent dark but with these debuffs this convention seems flipped.
For an example of a naming parallel the debuffs in "Eden's Verse: Iconoclasm" applied by the cast "Unjoined Aspect" applies either a light blue/white debuff called "Astral Effect" or a dark purple/black debuff called "Umbral Effect" following the typical assumption of Astral-Light and Umbral-Dark, the "Astral Tilt" and "Umbral Tilt" are most parallel to these as their function is virtually identical while their naming is flipped. As an example "Astral Effect" amplifies damage received by light (white) attacks and reduces damage taken by dark (purple) attacks in the fight while "Astral Tilt" amplifies damage received by dark (red/black) and allows the player to mitigate light (white) towers

As examples of both of these I was able to take this image of "Astral Effect" from doing Iconoclasm in an Unrestricted Party solo

And while I didn't remember to screenshot it while I was in the instance I was able to find this image of an example of "Astral Tilt", the cursor isn't easily visible but it's the 20 second duration debuff


To clarify these mechanically work fine but it caused confusion when discussing and understanding the debuffs as the assumed relation between name and icon was broken

Edit: Upon viewing footage of the fight the naming of the attacks also seems to follow this naming scheme being that "Astral Glow" (the hit from the Astralbright Soul debuff), "Astral Advance" (the hit from the "tower" left behind by Astralbright Soul), and "Astral Impact" (stack laser from Astralstrong Soul) are all red/black while their counterparts "Umbral Glow", "Umbral Advance", and "Umbral Impact" are all white. A secondary attack name that does not follow the same naming scheme but causes the debuffs is "Searing Radiance" (applies Umbral Tilt) and "Shadowsear" (applies Astral Tilt), being the attacks caused by the tethers from Paradeigma 2 that retain the standard Light/Dark connotation of Radiance-Light and Shadow-Dark and apply debuffs of the fitting icon and function, but opposite name. These names are just added since if the debuffs themselves are changed but these were left it would only serve to cause inconsistency within the fight's naming itself. (Searing Radiance and Shadowsear are fine to clarify, I'm just mentioning them as they are related to application of the debuffs in question)