Isn't it gorgeous? We use two different custom color processes and a texturing process as well. If you're in the Denver area, I'm happy to talk you through the process. If not, I can tell you it's bleach and a colorized penetrating oil with wirebrushing. These applications will require a highly skilled contractor and, depending on your area, I might be able to refer you to a professional. Joni@artisticfloorsbydesign.com. Thanks!