Next step is where you can get creative. I have several tubs of dirt from my local area. One is very fine with a light grey color often perfect for African horns especially kudu ;). You can also use powdered clay in the dry form as you see with my red dirt and i have a darker grey dirt in the bag in between. I use the color or a mix of dirt to get the color I want. Rub the dirt into the horns by hand. The warm wax will hold it in the cracks but most will fall off so do this over a trashcan, box or something to catch the reside dirt.