Do you use different color fabric backings in the designs that have them?

I am willing to install your fabric into the frame of any sculpture that has a fabric background ring, like Pulsar. I charge a small fee for this service. You need to supply 1 square yard of fabric. The patterning of the wheels is most impressive when backed by a darker fabric verses a pastel. Prints interfere with the design. The fabric should be a medium weight.