Take a look at Swains raven form?
Hello, I am a Swain main, and I bring forth the Swain train with my Swain pain on the occasion I am mid. Granted I am avoiding it until the Ekko hype and tuning comes out next patch.
Anyway, I noticed Swains raven lost it's menacing appearance with his texture re-balance, and while I understand with these you wanted to blend champions into the new summoners rift, which naturally means less details and smoother colors, but the problem is it turned Swains raven forms into colorful birds instead of Ravens.
So my suggestion, request, whatever would be maybe giving Swain some tweaks to his raven forms to give them back a creepier look? I honestly don't excel to well at colors, I don't know what your philosophy is for designing the appearances, but it would be a nice change whenever you get the spare time.