Does anyone have any experience using Varitone Graduated Backgrounds for photographing Carder glass? Here is a link to one site carrying the product (many other places sell it as well).

Specifically, I am wondering about the color choice. Eliminating brown, red and the blues seems pretty easy (although blue I am told works well for colorless pieces) but what about the jet black to white, soft grey to white or thunder grey to white? Is there a clear choice there as a background which best highlights Carder colors?

Thanks.

A Primer On Photography Lighting

This link might be of interest on photographic lighting