Can i add info to multiple itens in a collection?

Hi people, im new here and i am not very good at english so i dont know if i have searched enough, but i didnt find what i need…

I just imported a blog from wordpress, and now i want to add colors to different categories… The thing is, i already imported 2056 blog posts into webflow collection… is there a way where i can filter only a category and add color info to all posts inside at once?

Because so far i only see the possibility to enter each post and add the color manually.