Where are the chromas for viridian kayle and blackthorn morgana?

[zombie-brand-facepalm] c'mon

Every fkin time a new skin or chromas come out, it's always the same deal

They will start showing up in advance of their actual release, as Riot has to code them in a bit in advance of their true release date. This is usually a pretty typical thing to see, and they'll likely available within the next patch or two.