My take on the Lifeslayers warband colour scheme.

1. Prime with Retributor Armour

Gold (Armour Trim)

1. Base with Retributor Armour
2. Shade the recesses with Agrax Earthshade
3. Highlight sharp points and fine edges with Stormhost Silver

Dark Red (Armour Panels)

1. Base with Khorne Red
2. Shade the recesses with Agrax Earthshade
3. Highlight the edges with Wazdakka Red
4. Fine highlight along sharp edges with Evil Sunz Scarlet

Dusty Red (Armour Panels)

1. Base with Bugman's Glow
2. Shade the recesses with Agrax Earthshade
3. Highlight the edges with Cadian Fleshtone
4. Highlight fine points with Kislev Flesh

Black (Armour Ribbing)

1. Base with Abaddon Black
2. Highlight the edges with Eshin Grey
3. Fine highlight with Dawnstone

Green (Cloth and Cables)

1. Base with Caliban Green
2. Shade the recesses with Nuln Oil
3. Highlight the edges with Warpstone Glow
4. Fine highlight with Moot Green

Silver (Details)

1. Base with Leadbelcher
2. Shade the recesses with Nuln Oil
3. Highlight the edges with Stormhost Silver

For grenades, replace Nuln Oil with Athonian Camoshade

Brown (Leather)

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

Horns

1. Base with Rakarth Flesh
2. Layer Skrag Brown over upper half
3. Shade over with Agrax Earthshade
4. Highlight the lower portion with Rakarth Flesh
5. Finer highlight with Pallid Wych Flesh
6. Tip with Abaddon Black