Changing the looks of Bethany's Circle robes, Acts 2 & 3

One way to do it is to follow this tutorial.
forums.nexusmods.com/index.php?/topic/314293-tutorial-re-skinning-using-gff-editor/

Except you want to change rob_appa instead of rob_magi and you'll have to find the name of the model for the armor you want to change.
Anthariacite Robe is in parts, so I have no idea how you'd go about with that, but with the Armor of the Four Elements you can just nab the one you like, put it in the override folder and then switch out rob_appa in the tutorial with rob_atra.

The thing is, that Bethany isn't wearing unique robes when she's in the circle, so everybody else wearing those robes will change their outfits as well if you do this. Looking at you Alain. No idea if there is another way to do it.

Sokemis Forgot to mention that the gff4 editor is just the PYGFF thingie.

Also if you haven't already, make sure you import the filenames into the editor, otherwise nothing will make sense. You can find them here:
www.nexusmods.com/dragonage/mods/4512?tab=description
Then you need to open the editor, and go to Settings->Import String->Filenames and find the .filelist file in the fnv dump and open it. Then do the same for the .typelist file.