Just a small reflection...
The Leica M8 and the M9 use essentially the same sensor design. There are several aspects, the sensor on it's own is a monochrome device. Color is provided by the CGA (Color Grid Array) in front of it and some math describing the CGA. Implementation of IR-cut filter and UV-filter may also matter.
Some of the differences depend on the filter implementation, and this may relate to the vendor of the sensor and their preferences. I guess that Kodak sensors may be a bit different from Dalsa sensors in their CGA design.
One thing that CCD vs. CMOS can affect is that CMOS can have some noise reduction that CCD cannot have. All CMOS sensors, AFIK, have correlated double sampling. That is, they compare sensor voltages before and after exposure, eliminating some of the noise. Many CMOS sensors of modern design have massively parallel on chip converters, that is a technique that may reduce noise.
My point is that CCD vs. CMOS does not affect color rendition, but there may be a difference between vendors. Leica DMR, M8, M9, Hasselblad backs, Pentax 645D and older Phase One all use Kodak sensors, and some of the advantages perceived with those backs may come from Kodak's CGA design. Later Phase One sensors use Dalsa designs and they may offer different color rendition. That difference is not due to CCD/CMOS but to different CGA designs.
I understand what you're saying. Times have changed very fast these past few years, budgets are tight and video has become so important. BTW, there now is a Contax to Leica S adapter. You'd still be able to use your beloved lenses. Maybe in a year or two when the S might go CMOS, there'll be a video option, though probably with focus difficulties, having such a large sensor. But by then the system might loose the CCD- look ...
All the best,