I love this rug.  It had a nice soft finished bottom, so if you have hardwood floors you can put this down without anything underneath it.  That being said, it will move a little, but I got the 6' round one, so it does not have any furniture sitting on it.  The rug is very thick and soft.  The difference in colors is very slight, but just enough.  Lighter than I anticipated overall, but I do like it and it looks amazing up against dark hardwood floors.