Ordered it on a Friday, received it on a Saturday, placed it on our floor on Sunday. Besides the fun of getting it that fast, we love the rug. The cool tone can look gray, blue, or teal depending on what color furniture and accessories you have in your room and also the time of day. Basically, this rug can almost be considered a neutral IMHO. The pops of color are just enough without being busy or loud. The orange and colors always appear together so it's not like one color  dominates any other color. We have dark gray couches and the navy color is dark enough to compliment but not clash with them. Didn't have any flattening issues...it's basically flat except for one end that we have weights on for now to flatten them out. We didn't order a rug mat because our furniture is anchoring it on two sides and that's been enough. I hope that helps. The many good reviews of this rug helped me make the decision to order it and they were right. Also, my cat likes it.