I've played League since Season 3 and one issue I've always had was the lack of Blue-Yellow colorblind options. When champions such as Illaoi, Kog'Maw, or skins such as Zombie Brand or Tyrant Swain happen to be on the enemy (or even my own) team it's a major disadvantage due to a lack of visual ques.
One thing I've done in the past to fix this issue is adding a different client to change the particles of champions often times just swapping them to a different skin so Illaoi for example would become Void Illaoi. This quickly won't be an option as seen by
[**this Turkish Boards post **](https://boards.tr.leagueoflegends.com/tr/c/duyurular/EV4TAaqn-lolskin-kullananlar-dikkat1) as it will become a banable offense.
Now I've heard it all from just ban X champion or just dodge if you see them locked in. One issue with this is can't ban them all and can't predict which skin the enemy will use.
As it stands leagues colorblind mode is made for Red-Green colorblindness which in all fairness makes sense. It's the most common form of colorblindness. However this also means that it's not exactly useful in my scenario. It's simply frustrating. I've seen RIOT talk about clarity being important in the game and so I'm surprised this hasn't been an option.