Hi Philip, what do you mean by "RGB balance makes it bluer"? Are you talking about Registax's Auto-RGB feature? If so, you should
not use it for any planet that has a strong colour cast, like Mars, Uranus, Neptune or even Saturn. Why? Because it tries to produce a colour cast where all the channels are more-or-less equal. This is fine for Jupiter, bad for Saturn, and terrible for the others.
On the CN website, one accomplished planetary imager (DMach) uses an ASI290MC, and he chooses the parameters Wred=66 and Wblue=99 in FireCapture. This gives a good (but not perfect) white balance straight out of the camera. There may be a little correction to be done in post-processing, but nothing like what you are seeing.
https://www.cloudynights.com/topic/7...24/?p=10405666
You can see some of Darren's images here
https://www.astrobin.com/users/DMach/
Hope this helps,
Andrew