Arlathan like Limgrave?
Back when Elden Ring got out, the overwhelming glow of the Erdtree got me thinking that this was how Arlathan must have looked like: so profoundly gold encrusted that it served as a secondary Sun, giving the skies in proximity a green hue. And the Fade might have been affixed with that image as its default state, carrying some of that interaction between a golden glow and a blue sky in between the Void pockets.