This is my take on the colour scheme of Hakanor's Reavers, a chaos warband featured in the Chaos Space Marine codex from 4th Ed. 40k.

The main colours are gold and black with a lava effect.

General Information:

My general method is to lay down all the base colours for the model, then do all the shading in the recesses before moving on to the highlights.

I don't own an airbrush, so the recipe will mainly consist of brush on paints.

Priming:

I find the metallic sprays from GW tend to be a little on the transparent side, so an initial undercoat of grey helps.

1. Prime the model lightly with Mechanicus Standard Grey
2. Prime over that with Retributor Armour

Gold (Armour Trim):

I generally start with the armour trim so that any time I get paint on another piece its easy to cover later.

1. Drybrush over the model with Retributor Armour to even out the colour
2. Shade the recesses and around any rivets with Agrax Earthshade
3. Highlight fine points and sharp edges with Stormhost Silver

Black (Armour Panels):

I only added highlights to the black panels that weren't covered with the lava effect.

1. Base with Abaddon Black
2. Highlight the edges with Eshin Grey
3. Add fine points of Dawnstone

Green (Details - Cloth, Wraps):

1. Base with Incubi Darkness
2. Shade the recesses with Nuln Oil
3. Add a thin layer of Abaddon Black to the recesses
4. Highlight the edges with Kabalite Green
5. Add fine points of Sybarite Green

Grey (Details - Armour Ribbing, Tubes, Gun Casing):

1. Base with Mechanicus Standard Grey
2. Shade the recesses with Nuln Oil
3. Highlight the edges with Dawnstone
4. Highlight fine points and make light scratches with Administratum Grey

Brown (Details - Leather Pouches):

1. Base with Rhinox Hide
2. Shade the recesses with Agrax Earthshade
3. Roughly highlight the edges with Skrag Brown
4. Add a fine highlight with Ushabti Bone

Silver (Details - Weapons, Grenades):

For grenades, replace Nuln Oil with Athonian Camoshade

1. Base with Leadbelcher
2. Shade the recesses with Nuln Oil
3. Highlight the edges with Stormhost Silver
4. Add a light rust effect with thinned Skrag Brown

Tan (Details - Flesh):

1. Base with Rakarth Flesh
2. Shade over with Reikland Fleshshade
3. Add a thinned layer of Carroburg Crimson
4. Highlight the edges with Rakarth Flesh

Beige (Details - Teeth, Bones):

1. Base with Rakarth Flesh
2. Shade over with Agrax Earthshade
3. Layer the upper portion with Rakarth Flesh
4. Add a highlight to the tips with Pallid Wych Flesh

Red (Details - Lenses):

1. Base with Mephiston Red
2. Shade the recesses with Agrax Earthshade
3. Layer the middle with Wild Rider Red
4. Add fine points of Fire Dragon Bright

Lava Effect:

For the legs, I gradually lightened the colour of the lava towards the feet. On the shoulder pad and the backpack vents, I tried to keep the lighter colours to the middle of the cracked lines.

1. Paint on cracked lines of Khorne Red
2. Layer the middle with Wild Rider Red
3. Add a layer of Fire Dragon Bright
4. Add a small amount of Yriel Yellow
5. Add points with Dorn Yellow