I have always been successful in reaching out to item/clothing creators either by discord or through the friend request messaging system in-game. These messages often resulted in excellent communication and often-times even collaboration. Recently, I was unable to contact an active seller by either of those methods. I completely understand why a person would both 1. not have discord or 2. wish to accept friend requests from seemingly random people. This produces an awkward situation that could easily be avoided by a "contact seller" feature. This way, I can ask something before purchase, like "am I able to change the colors on this item?"
Contact Seller Feature