May have answered my own question here. I decided to explore some custom channel mixes in PixInsight using pixel math. Turns out this got a closer to what I think the natural colour might be.
RED channel: RED
GREEN channel: 0.5*GREEN+0.5*RED
BLUE channel: 0.5*BLUE+0.5*GREEN
Very inelegant math but... ended up with the attached image without having to fart around with colour masks etc. and I could keep the moons.
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