Why is this once colorful game adapting the same blueish particle theme for everything?
This blue hue that's on champs like Jayce, Karma, the new champ and even the legendary Ashe skin is making the art in this game stagnant. Elemental dragon's color pallets were a step in the right direction but even summoner's rift is blue. Look at old champions like Brand, Zyra, Cho'gath, Pantheon they all had unique ability particles and different colors. You can distinguish easily. But even Yorick who's ghouls were all different colors uses these blue particles. Every champion looks the same and even the new client overuses blue. This is something that can be seen for yourself.
and 
),but it is also associated with high-tech(which is likely why Camille has some blue on her too),the color of ice(which is why a lot of freljord champions use it) and it seems to be associated with the curse of the shadow isles(the crest of the shadow isles is blue,hecarim is blue,kalista is blue and yorick has a blue tone as well) which makes sense since blue is a very cold color,thus fitting for the curse of the dead.
this year who all don't use blue at all.
