I got 6 orks painted up with the Army Painter War Paints. This photo shows them in their basecoated stage. I will lay out the colors that I used to basecoat them.
Cloth: Uniform Grey
Boots, Belts, Pouches: 1:1 Uniform Grey and Black
Metal: 1:1:1 Uniform Grey, Black, Oak Brown
Yellow: 1:1 Daemonic Yellow and Desert Yellow
Red: 1:1 Pure Red and Dragon Red
I washed them with the Strong Tone Ink. From my experience with their Quick Shades products, I knew that the Strong Tone would be the most versatile ink, so it was the only one that I purchased.
Here they are in their highlighted glory.
They look pretty good. The highlights I used are as follows.
Cloth, straps, belts, boots, pouches, etc, didn't get a highlight. I have 150 of these dudes to paint....
Metal, first layer: 1:1 Uniform Brown / Plate Mail
Metal, second layer: Shining Silver
Red, first layer: Pure Red
Red, Second layer: 1:1 Pure Red, Skeleton Bone
Skin, first layer: Goblin Green
Skin, second layer: 1:1 Goblin Green, Necrotic Flesh
Yellow, first through third layer: Daemonic Yellow!!!!!!
That is right, it took 3 layers of Daemonic yellow on their armor, and it still looks bad. The Daemonic Yellow has very poor coverage. Yellow is a tough color to give opacity, but this is nearly useless. Even over a yellow/brown basecoat I couldn't build up the obnoxious Bad Moon color that I was looking for.
To sum up my experience with the Army Painter Warpaints so far:
Every Color except Daemonic Yellow is awesome.
Daemonic Yellow is a waste of money. I am going to try Reaper or continue using GW.