Pondered on this image for a while Fred. I love the details and nebulosity colour delivered by your HaRGB processing. Do however feel you could have managed the stellar profiles better. Perhaps re-layer straight RGB as colour over the top and mask it. If you are finding the RGB data isn't a match for the tight stars produced by the Ha filtered data, generate a synthetic lum from the RGB first. This will make it easier to integrate should you have issues. I was not aware of this Seagull neb, only IC2177 in which I've imaged sometime ago (
here). Names are names eh? I guess its no different to M1 and NGC6357 - both referred to as the crab nebula. Though the latter I think is more like a lobster as a tail is visible with good Ha data. Well done and thanks for sharing your efforts.