All I have thus far that's presentable.
I should be getting my paints soon, so I'll begin to just paint everything like a crazed man.
The theme/fluff of Hivefleet Demeter is that it's typically used to take planets uninhabited by the other main armies. Thus the name, the goddess of Harvest. It goes from dense jungle to dense jungle and mulches everything that gets in it's way.
More and more often it's been used on the frontlines of the Nid's forces, taking out smaller outposts, or beginning the main invasion on larger planets.
The paint scheme will be greens/browns.
I'm also considering a scheme that I tried on one of my minis, where I use shining gold to cover everything and use a light blue that glows out from carapace cracks. The eyes glow green.
I saw it on a carnifex one day, and I really liked the idea.
The reason that this scheme wouldn't work is because of the lack of reason behind it. I was considering Necronids, but that's besides the point. xD
At this point I have this left to paint:
8 Ripper swarms.
Yet to buy and assemble:
3 Tyrant Guard
1Battleforce (Carnifex, 8 Gaunts, 8 Hormagaunts, 3 Warriors, 8 Genestealers, 3 Rippers.)