I had my set custom made by a lady in Oregon. In my search for someone to sew a set for me, I considered:
www.baby-cakes.net
They make nice custom sets. I saw one of their sets in a store in Northern California. A few of their fabrics have white backgrounds and they also send out swatches.
The lady that I used sells sets on ebay and used to work for a baby bedding company called pinecreek bedding. You can see some of her work on ebay. You can search by seller using her screen name or email address:
nadia3*r
[email protected]
She can make whatever you want with whatever fabric you want. My set came out beautiful and the quality was amazing! She can email you photo albums of her past work. Her prices are great, especially if you can't find what you want out there in the baby bedding world!
Good Luck!