Tiffany reefer mystery

O.K., first thanks to all of you helping me with Colroado Midland colors, especially Everett Lueck and Matt Hutson. The CM train looks great..now to the DL&G train. The buyer wants a Tiffany reefer in the consist. Generally they were tgought to be white. Last summer 19th century train color historian Jim Wilke said they may have been a very light lime green. Mallory Ferrell says he took chips of of a reefer body and they were straw yellow-like the way cars. Any other informed opinions? Also where is a Tiffany reefer body? I heard one may haver run on the SVR. (the buyer likes the light yellow). Thanks for the help!