How to match the purple additive in Annie's studio?

First of all, purple dye (big-eyed fish (purple))? I haven't played for a long time, and I forget what material it is.

It seems that there is a book called Purple OOXX in the library, and it is very cheap to teach you to add purple additives. I don't know if this is necessary, because I always buy books first. ...

It must be done before, sometimes it is purple fish, but it turns red/orange in the end. Be sure to see what it is.