Well, I will answer my own message, with a request for critical review of my assumptions.
Attached is a scan of a Feb 1927 ad showing a 2 dr. coach. I don't know if it is a '26 or '27, but the colors are pretty darn close to the black-gray-green combinations provided by Bill Bradford. What is helpful is seeing how the louvres are painted and the belt-molding done. The disk wheel striping is more difficult to pick up, but it shows better on an ad that I have from "Country Life", April 1927.
Comments appreciated! (a real photo would be even better..send to wlinton1@charter.net)
http://webpages.charter.net/wlinton1/Photos/27%20Chev%20LR.jpg Cheers,