Color matching from David’s Bridal

Do you have a local David's Bride? If so I would personally go there and just buy something off the rack in the correct color and then have it altered. I did this with a dress for my sister. She decided a week before my wedding she hated her bridesmaid dress. I went to my local David's Bridal found all of the dresses in the color in her size and sent her pictures and she picked which one from there. I then had it shipped overnight to her since she lived in another state and she was thankfully able to have it altered in time.