There are options in the PixInsight format converter to use a white balance from the DSLR camera. Otherwise, if you do a pure RAW conversion there is no color adjustment made to the pixel values. Look under PI's DSLR_RAW format converter (go to the Format Converter tab and double click on the DSLR_RAW entry to view the options). Generally, however, you probably don't want to apply any color correction with the format conversion debayering on files that have had bias/DF calibrations and you can always change the color balance during the post processing.
Here is a simple shot of the blue sky that I took using a Sony NEX camera. The image in the background was opened using the camera white balance setting in DSLR_RAW while the foreground image was opened with no white balance (they are the same source file). After each file was opened I applied an auto screen transfer stretch to the image. You can see that the version that received no white balance is somewhat green or cyan, while the camera color balance produced a deep blue (maybe too blue, but a greater stretch on the linear source would likely make it appear closer to what you might consider normal).
And, the DSLR_RAW options dialog in PI. Note, if you change any of these setting make certain that you go back to "Pure RAW" before you do any processing of your astro subs.
Edited by james7ca, 13 July 2018 - 10:56 AM.