Ei borrows some of Ronova's powers ? She has red thunder aside from normal purple. Plane of Euthymia has a blood moon. The scene when Traveler walkimg outside after Signora gone has red filter.

Doubt it, she was just traumatized from what happened in Khaenri'ah and what happened with Ronova.

Her powers stem from following the example of the heavenly principles >!keeping people in the stone age under your control like a tyrant!<.

I always thought it was the iridescent moon, the same one Arlecchino is using. Although, I think the Nodkrai aq proves thats not possible.

you're overthinking the anaglyph effect on the 3rd image lol

pretty sure it's just there to visualize the traveller's mental state, otherwise you'd have to drag in the lore explanation for the blue component of the filter

Ei is clearly obsessed with Ronova between the Statue and the red moon in Euthymia and the eye imagery

Borrowing her power? I dunno about that. I think it's just trauma

Unlikely that she borrowed her powers. But Eternity is the ideal that is closest to the Heavenly Principles. She has connections to Istaroth, Naberius and Ronova in more ways than one, so I think her Plane of Euthymia and the Statue of the Omnipresent God are just symbolic of that closeness to the Heavenly Principles.

Keep in mind: much like the Shades are shadows of the Heavenly Principles, she was the shadow to Makoto.

She idealises the Heavenly Principles. There's intentionally a lot of parallels between what's happening in the Inazuma AQ and what's happening in Teyvat as a wider whole.

I think you all skipped some lore , Ei is “alive” because makoto made a deal with Ronova to bring her back , her whole existence in this very moment is connected to her