The Darwinist Union is a democratic alliance of human-inhabited planets at the furthest end of the Universe. The humans reached there through a wormhole and began their rule on a small number of planet systems. The current regime tends towards an expansive policy and currently huge amounts of money and resources are pumped into the starfleet and the military. The fleet has a number of standard ship variants and as the navy's colour is blue, the ships are painted like that.
26 ships made out of plasticard and match sticks - very simple designs but I imagine warships wouldn't look like Age of Sail ones - modern warships and planes have very simple, ergonomic designs as well.
I used a black undercoat (sprayed on some, brushed on the majority), a mix of VGC Wolf Grey and VMC Prussian Blue, a blue glaze and brighter highlights - nothing too fancy. Some ships have cosmetic damage but this just gives them a war-torn look.