Revelations from Patch 5.3

[Crushnight]

Don't know, looks to me as if the general style of the Artwork makes it hard to see, but the robes seem more black than white (don't make me start a dress discussion).

The only information I want to get out of this...

Looking at the entire artwork, Lahabrea's robe is deliberately more lighter in colour, it is lighter than Ryne's hair, Gaia who wears black is far darker than Lahabrea, also his mask is darker than his hood whereas Ascian Lahabrea had the opposite his mask was lighter.

This isn't the same Lahabrea we have dealt with previously, perhaps it is Lahabrea in his Amaurotine robes before Zodiark became a thing but that artwork really does highlight him, even if he isn't center stage.