Hmmm?..the colour looks quite a way's off Alistair
(very grey/blue) but the details are really pretty good, as are the faint extensions revealed, you have that kind of foot like arm (huh?) at the bottom
Not sure what has caused your colour imbalance though..? Could you have got your filter files mixed up in the RGB'ing? or in fact inside the filterwheel? Or perhaps due to the very limited colour you collected it just got a bit skewed?
Mike