I also used the AKAN AIIz, in my case the enamel version. My photography is not in natural light, and I do think it looks a bit different in reality, but this is what I get prior to any clear coats, etc:
And the final model. I used a gloss prior to the decals, and I think the satin that I used to restore the original sheen should have been more matt. The flash does make it look shinier than it really is though. Also, in the picture below, it definitely looks darker than it does in natural light. I'll try to photograph it outside sometime for a more accurate representation:
It does look dark in reality (not so dark as in the pictures), but I actually like it. Of course, if you believe EP's interpretation of this colour, you would consider it completely wrong, but the few German colour photographs of this colour do appear pretty dark, as well as on many black-and-white photographs.