This is my way to paint some relatively grimdark ork Goffs in a timely manner.

1. Start by priming the model in a whitish color like Wraithbone or Corax White (Optional: I like to prime the model with Chaos Black and doing a zenithal highlight with Bold Titanium White just to get some value)

Armor and Accents

1. Coat everything that you want to be black in Ratling Grime
2. Coat everything that you want to be red in Khorne Red
3. Go back over the red with a 50/50 mix of Ratling Grime and Khorne Red , thinned down to a wash-like consistency

Skin and Natural Details

1. Paint the skin with Militarum Green
2. Pick out the teeth with a cream color of your choice
3. Paint the eyes with Mephiston Red (Optional: add a smaller dot of Flat Yellow for a pupil)
4. (Optional: pick out a few teeth with Retributor Armour )
5. (Optional: sketch on some tattoos or warpaint with Khorne Red or Abaddon Black )

Metallics

1. Basecoat all metal bits with Gunmetal
2. (Optional: Pick out smaller details like bullets with Retributor Armour )
3. Lightly drybrush and/or sponge on Stormhost Silver for paint chipping