From Warhammer Community
https://www.warhammer-community.com/2018/11/22/diary-of-a-horse-lord-part-3fw-homepage-post-3/
Dark Brown Horse
Skin Rhinox Hide
Skin Agrax Earthshade
Skin Rhinox Hide Hair Abaddon Black
Skin Rhinox Hide mixed with Mournfang Brown (1:1) Hair Eshin Grey
Skin Mournfang Brown Hair Dawnstone
Grey Horse
Skin Dawnstone Hair Karak Stone
Agrax Earthshade
Skin Dawnstone Hair Karak Stone
Skin Dawnstone mixed with Flayed One Flesh (2:1) Hair Ushabti Bone
Skin Dawnstone mixed with Flayed One Flesh (1:1) Hair Rhinox Hide mixed with Lahmian Medium (1:3)
Light Brown Horse
Skin Mournfang Brown Hair Rhinox Hide
Agrax Earthshade
Skin Mournfang Brown Hair Rhinox Hide
Skin Mournfang Brown mixed with Flayed One Flesh (2:1) Hair Dryad Bark
Skin Mournfang Brown mixed with Flayed One Flesh (1:1) Hair Gorthor Brown
Finishing the horse
Leather Gorthor Brown Cloth Deathworld Forest Armour Doombull Brown Hooves Steel Legion Drab Teeth Karak Stone Tongue Bugman's Glow Metal Ironbreaker Gold Retributor Armour
Agrax Earthshade all over
Leather Baneblade Brown Hooves Karak Stone Cloth Nurgling Green Armour Tuskgor Fur Metal and Gold Stormhost Silver
Theory
The ‘Theory’ horse example might look a bit… strange, but it’s there to show where the coats of paint are applied at each stage. Simply follow the theory with the colours noted in the guides below – just click the image to see how it was painted!