So they emailed me back and the order is canceled. Thankfully there was no issue with that. Now its on to finding new dresses.
I decided to just let the bridesmaids get any green dress they'd like. For those who are interested, I'm envisioning something like this:

Which is what I had talked about doing a long time ago (some may remember). So this way I don't have to worry and they can just take care of it on their own time. Heehehee.