The robes worn in many of the photographs I've seen of Aro gTer practitioners appear to depart in certain ways from traditional designs I've seen others wearing. One example would be the incorporation of embroidered roses onto the white section of a red-white-red zentra (wish I had a photo of this at hand to show you what I mean! my apologies for working from memory).
Here's what I'd like to know: from your point of view, in what ways are the robes and other garments used among Aro students and teachers traditional or representative of a tradition? In what ways might they be novel? And where do those innovations come from? Are they indicative of particular characteristics of this school?
There are some shawls that are particular to the Aro lineage, such as the peaceful, joyous & wrathful shawls worn on special occasions (like Tsog or empowerments) by the lineage-holders. More information (& photos) available here: http://aroencyclopaedia.org/shared/text/n/ncr_kdt_ph_07_joyous_shawls_eng.php
. There are also particular shawls worn by apprentices (formal students) of the Aro lineage. All these come from the vision of Aro Lingma through Ngak'chang Rinpoche. The shawl designs are not part of the gTérma but were specified by Aro Lingma.
Other than the shawls, ordained ngakpas & ngakmas wear the traditional white shamthab worn by many other ngakpas & ngakmas.