This top one is a solid, warm ivory concrete floor with a gloss finish.
This one is done with a dark pigment wash and has more of a matte finish. Both of them are perfectly flat and crisp right to their edges.
The company that did these is called Hudson Concrete, which is located in NYC. They are concrete pros, and have done floors for a number of high end showrooms, which you can see on their site along with some detail on how they get good results.
I love concrete floors when they have been done this well. They can turn the coldest and cheapest of materials into something really warm and living — AND they are really good for radiant heat systems. Bookmark this resource.