I have gathered at least some data now for 3 colour channels and luminance, and did a first combination tonight. It needs more colour data to improve the signal-to-noise ratio, especially in the Blue channel which was taken through light cloud and is very noisy. However, it's still quite pretty and I'm pleased with the result so far.
This would be 90 minutes of Luminance, and 60 each of Red, Green, and Blue binned 2x2. QSI583 camera on an AT8RC, autoguided with a Lodestar, all on a Losmandy G11.