Hey folks. I asked Anycubic about the color coding on file names on the Photon UI and got a response.
The red file name is the file you have selected currently, or was the last file you had selected.
As far as why some models are yellow or blue is dependent on what you had selected when you sliced the model.
Left is the pic I sent them in my query, right is their response.
Hope this helps.
翻譯年糕