While looking for a dyehouse in Austin, I came upon your column in Fabrics.net. Since you are based in Austin, I wondered if you know of anyone in the Austin area who does large scale dyeing? I guess it is not a huge batch, but we have sofa slipcovers that we need to have dyed in one batch.
I don’t know any such place in Austin. A good resource is Sherry at www.fabricdyeing.com. She works with people from all over the country on stuff like this. You will need to send the covers to her, but it will be much easier to do that than to experiment with it yourself!