That is of course possible. I even considered calling it the Technicolor edition for a while, since it reflects the IB Tech colourtiming which may have been slightly different than the Eastman prints.

As to the colour of the sky - that's the thing - I started from the BD, so I couldn't make everything appear exactly as it does on the IB Print, all I could hope for was a close approximation - in this case, everything's almost the same, as you say, except for the sky. Although I'm only seeing a very slight blue/gray cast in the sky in that photo.