We just poured an interior slab for our friends at Earthscape Designs in Newnan. Kevin and I used a Solomon Rawhide color that really popped and softened the entire room from what would have been a stark grey floor. And no, this is not a stain or a paint, its actually mixed in the concrete so it will always look this good. Ask us about our permanent color options before we pour your next driveway, patio, or concrete slab!