I went to the Charles Cushman website to view his color photographic work from the '30's and '40's. I was interested in the "natural color" of his transparencies.
Interestingly enough, there was a wide range of tints and saturation.
After experimenting I settled on this particular tone, then added the black transparency frame to continue the illusion.
As thrilling as this color photo is, I think there is a more dramatic feel to the Black and White version.