This guy was part number 070268/5.
Undercoat: Vallejo Mecha Black
Green: Scale75 Artist Sap Green and Spring Green, highlighted with Spring Green/Pro Acryl Titanium White
White: Pro Acryl Titanium White, washed with Targor Rageshade
Sword: Pro Acryl Burnt Red/Bold Pyrrole Red/Art Black/Golden Yellow/Titanium White
Gold: Necro Gold, washed with Targor Rageshade, then Elven Gold, then Citrine Alchemy, then White Alchemy
Base: Scale75 Soilworks Rough Ground mixed with Woodland Scenics rocks. Base coat of Mechanicus Grey, then a drybrush of Dawnstone, then Ulthuan Grey, then White Scar. Then I decided I didn’t like it as much as I expected and put Scale75 Soilworks Ash all over the base and highlighted with Soilworks Gypsum. Rim of Vallejo Mecha Black.
Chequered knee: Scale75 Pastel Green and Titanium White.
Red: Scale75 Art Black, then Pro Acryl Burnt Red, then Bold Pyrrole Red, then Golden Yellow
In the end mixing the Rough Ground with the larger Woodland Scenic chunks produced a texture that was a bit more liquid-y than I was happy with – live and learn, though.