Sources for case color restoration:

http://turnbullrestoration.com/

THE COLOR CASE COMPANY Donald A. Menk Jr. PO Box 27 14435 Unity Road New Springfield, OH 44443 Phone: 330-542-2062.

John Gillette of "Classic Guns Inc." http://www.classicgunsinc.com/

http://www.cnygunworks.com/gallery.html

You can see examples of their work on the Case Colors PictureTrail
http://www.picturetrail.com/gallery/view?p=999&gid=12588446&uid=6511424
Click 'Slideshow'