If you'd like to change the color, quantity or type of band purchased, we recommend that you email us requesting that we cancel your order, so you can proceed with purchasing another. Unfortunately, it isn't possible to change this through your Empatica account.
You may however be able to edit your shipping address based on your order status. If your order status is listed as Not Scheduled, you'll be able to edit the shipping address, so long as it is within the same country (due to the possible difference in shipping charges).
For instructions on how to edit the shipping address, please read: How can I edit the shipping address on my order?