Oh sorry, I did miss the point
My understanding of the offset is to help get a correct white balance direct from the camera during imaging, similar to the way commercial digital cameras have a "white balance" feature. The issue with the ASI224MC in particular is that the sensitivity in the blue region is too low, even with the offset set to 99, I find I still have to increase the blue level in post processing to get the colours to look "correct". In the ZWO cameras, there is no ability to set a "Wgreen" in the driver, the blue and red levels are set relative to the green level. I believe that what the Wgreen offset in FC does is perform a software reduction in the green channel, so that the red/green and blue/green ratios can be increased (above 99/50) because now the ratio is (say) 99/45 so the blue cannel is effectively higher straight out of the camera.
With the QHY cameras, all three colour components can be set individually so the white balance setting is slightly easier.