During FIFA 19 there were discussions on the forum regarding the referee's kit, and the possibility of choosing which one they wear when you choose your playing kit.

Being colour blind i often find it difficult to distinguish my player from the ref (Particularly the Bob Marley kit)  I am in a large group on FB (around 700) and there are quite a few of our members who are not colour blind, that have the same issue with referees kits. 

I raised this last week on the official EA community forum but got Zero response.