During the To Raise a Banner of Flame event the Armor Smiths were murdered and unable to create armor at its former AL.
During the Fever Dreams event, the Armor Smiths returned to their former health and were able to produce Shadow Armor at its former strength (Neo-GSA).
Lore & Dialog
Jibril ibn Rashid tells you, "Nuhmudira has finally restored us to full health! She has also stocked us with some extra supplies that we needed, such that we can provide you with either a version of the original Shadow Armor, or its successor. If you wish to trade one version of your Amuli set for another, simply hand it to me. Please take out all Atlan stones from your armor before handing it to me."
Jibril ibn Rashid tells you, "Also, if you wish to color your new Greater Shadow Armor, you may buy a vat of color from my assistant. If you do not like the color, please give me the armor piece and I will replace it with the standard piece, which you may then choose to recolor."