@mzedp that is great progress. From the other thread Camera error help - General - OpenFlexure Forum, have you now lost the camera connection completely or is it still a colour problem? The issue might be related to the SD card installation. They are a bit if a weak link in the Pi system. If you have a new SD card then that is worth trying. 64GB should not be a problem, the Raspberry Pi Imager deals with it.
If your camera is working, then it would be helpful to see the image without calibration. Go to settings > camera and at the bottom there is a button the Disable Flat Field Correction. It is visible in the screenshot in your post 20 on this thread. on that screenshot there is an image that looks pretty much exactly as I would expect without any adjustments before flat field correction and certainly without adjusting colour channels.
Camera calibration going green was an issue that we had in previous versions of the server, but @r.w.bowman made changes that remedied it and I have not seen the issue recur. You should never need to use the Pi camera settings directly, the auto calibration should deal with it, and then auto gain & shutter speed if you need to adjust for a dimmer or brighter sample.