Nice model but the Corsairs' other colour, black, seems to be missing altogether. With brass rims it might as well (or even more so) be a World Eaters Helbrute.
To fight the Alpha Legion is to fight on a shifting layer of deception and trickery, where every weakness can hide strength and every apparent advantage may be revealed as a trap.
I especially like the back of the Helbrute. For some reason it reminds me of the Rogue Trader era. I can't really say why, but it's probably because of the old, white Android figure that was the predecessor of modern Necrons.
I was going to mention Huron's lack of black too, but now I understand your logic. I was considering the Red Corsairs theme for my Chaos troops before I was taken (and branded with a hydra symbol) by some really clandestine types. What I really liked about the Corsairs' theme was the mix of red and black, which can be a very dramatic combination.
Huron's rims look like they need a wash, by the way.
To fight the Alpha Legion is to fight on a shifting layer of deception and trickery, where every weakness can hide strength and every apparent advantage may be revealed as a trap.