Foxbat,
Check this thread for some more examples:
http://forums.monstersinthesky.com/index.php/topic,124.0.htmlIn the mundane timeline we live in, ships moved from the colourful "review" schemes to drabber "battle" schemes in the period 1904-1908. This was a direct response to the increasing range guns were becoming capable of reaching effectively. When you have to be within 1,000 yards of your target to have a chance of hitting, it really doesn't matter what colour your ship is, and when you belch huge clouds of black coal smoke, you can't really hide.
When you're firing at 10,000 yards, though, it does help to blend into the background a bit more. Unlike the flat-trajectory short ranges, you're firing ballistically, and range was estimated using either binocular rangefinders using parallax, or by recognising the ship profile, checking a handy copy of Janes for the length of the ship, then calculating from the apparant length in arc-seconds and approximate heading to work out the distance. In these cases, any advantage - including fake bow waves, or darkening the fore & aft hull to make the ship seem shorter - could be critical.
In the Levs timeline, ranges are not yet at the 10,000-20,000 yards possible in mundane 1910, and flat trajectories are still favourite (calculating ballistic arcs against 3D targets is non-trivial). So the change in paintschemes is intended to achieve the same sort of aim - making it harder to calculate the range - but in a different context, mainly trying to spoil the "windage" the gunners need to allow for.
That said ... there's no reason not to paint up Levs in "review colours", and we do have an official list of them (queued for a subsequent product). Thevarious schemes have been worked out in terms of historical precedents, and intended uses - for example, the British and French are expecting to battle over the North Sea, so grey "battle" schemes work well there. It's entirely possible British Levs in the Meditteranean will use the all-white scheme there too, and so on.
THat help?
Cheers,
W.