Message: hello! I have a peach colored gown that I would like to dye black so that I can wear it more. I do not want to do this myself because I don't want to ruin the dress. Please advise. I live in Saratoga Springs, New York. Thanks!! bv

This is not a service that is normally available. Sorry. Almost nobody dyes customer's garments commercially anymore, only as art.

See Dyeing Polyester with Disperse Dyes .

There are a few people who will custom dye for you, if you pay them adequately for both time and materials, and if you take the risk if your garment proves undyeable and falls apart; see my list of dyers at Custom Dyers. Do NOT list your requirements there, as that list is intended for the dyers themselves to post on. Instead, look there for a dyer to contract.