Best Back Attachment MTX for The Oracle Set?

I'm looking for a back attachment/wings MTX suggestion for the Oracle Set (Ancestor League Kirac Vault Pass set).

I'm currently using the Nightfall Wings but I feel they don't quite go together because the share of purples clash a little. Most other back attachments in the shop seem to feel the same way.

Here's how my setup currently looks:





Suggestions welcome and thanks in advance! :)