Hi Gents,
The MS3 thing is perhaps a little deceptive. The greenishness is the same, would you believe. What has changed is that I plan to make it a bit darker. The existing Colourcoats RN06 is almost the same tonal value as both B6 and MS4 are supposed to be.
You're correct about the existing RN01 507A and RN04 MS1 being too close together. Infact, they're only around 2% apart in chroma / light reflectance value. The information we have now suggests that whilst MS1 is pretty much correct, the 507A is too dark. Once spread out properly they will be 4-7% apart (I plan to offer a 10% and a 13.something% version of it) and that will hit the mark
What's worth observation in general is that none of these colours ever looks quite "right" in isolation, or rendered against an unnatural background. As Richard Dennis has noted, the M.S. shades in particular were designed by artists and their purpose is to blend into the backgrounds in various lighting conditions - not necessarily to match the blue of the sea or sky or whatever - it doesn't quite work like that. As humans, our belief in how strong the hue of each of these colours should be is skewed, quite badly infact, by what we see around it. If we put MS3 next to a dark bluish grey like 507A then it looks very greeny-olive. On its own it looks like ditch water. With 507C it's the same thing. When on a CAFO 679/42 design plate surrounded by relatively neutral hued MS2, MS4 or MS4A it looks remarkably blue. On its own, against a blue sea and a blue sky, it just looks grey.
Once the tones are corrected, they look more like this attached
P.S. "Future" renders are indicative only - as in I may still tweak slightly. There will be no new "revelations" which materially impact how they look or fit in with a camouflage scheme though.