If you live in the NYC area there are tons of lighting places on BOWRY STREET....( i think that's how you spell the name of the street) I love the chandeliers too...be prepared to spend a pretty penny!
If you want your chandeliers to stand out and be noticed then I would suggest black. It will contrast nicely with the ceiling and beams. If the chandeliers are not meant for decorative purposes, or you don't necessarily want them to stand out I would...
Call an antique dealer or the show Antique Road show (they have a website) has antique dealers & they may be in your area or able to recommend a great resource for you.