Crissy, great question about what color stain was used on this interior concrete floor. I love the taupe-colored marble looks. I also love the geometric saw-cuts, it really gives it a clean and polished look. My husband and I would love to do something like this in our kitchen and out on our patio. We'll want to make sure we find good quality products and contractors if we decide to go ahead and do it. Nice job on this project, it looks beautiful! http://www.ddconcretorswarehouse.com.au/services