The shift in color from dark blue to teal to turquoise to gray silver are lovely. I thought the rug might be too bright but bought the 8 foot runner for an upstairs hallway. It makes an already pretty area even more special and is very soft underfoot and we usually are walking barefoot. I also bought a rug pad but haven't taken it out of the package yet. 
No problems for us humans but when the dogs are running it does slide a bit so will probably put the rug pad in place eventually. Wish it came in a round for another area on the staircase landing.