there are some weird mechanics linked with normal summon color , which also lead to troubles with targeting. IMO they were Missing some convention at the beginning ( during initial design ) and linked a lot of properties randomly. May be it was making sense at the beginning , but later things were piling up and up. So some mobs ended up white some are red and player summons are red too. And ninja shadows are white, lol!
So myself I choose not to participate in EM events : CC is too crowded for me, I cannot figure what is happening around , and EC with Pinco crashes all the time : too much stuff around. I hope one day they will be able to change something in the game to make EM events playable. Or
@Pinco will make some option to turn off other players and summons at all .