I wrote to Scott Mann, he replied that this is on his list but needs to get through some other planned projects first. Perhaps those of us seriously on board for these can make it known to Scott Mann.
I have ZERO interest in the remuddled version with warbonnet paint though, that is tough to look at! The as delivered versions are uniquely beautiful locomotives.
As far as color, here is description of the colors in Stan Repp's book Super Chief Train of the Stars:
"Olive Green." Other official Santa Fe literature describes it as "Golden Olive. " Although hard to tell in black and white pics, the areas that are Golden Olive sure look darker than lighter, hinting that the color may be more olive than yellow as on the Hallmark HO model.
The other option that will come into play, skirts, or no skirts? In the Stan Repp book, the skirts were removed before the inaugural run of the locomotives. They looked pretty cool with skirts in the publicity shots though. 
