The description of teal, gold and brown fits my memories of the first-run 35mm (and the IMAX print I saw back in March) to a T.

The Blu-ray transfer was created before DCP was a thing, so I'm not surprised that the DCP would be different/newer. WB has never upgraded the transfer on home media. (Is the version on iTunes the Blu-ray transfer also?)

I wonder if the color timing you saw on the DCP will be retained when WB does a 4K home version. (They probably won't use the 2.35 DCP master, they'll almost certainly go for the 1.78/2.35 variable AR again...)