I've got the turquoise silicon case and Smart Cover for my iPad mini. It is a very pretty color. Even better in real life lighting. I have a silver iPad but it would look so good with rose gold. May exchange my iPad for a gold one. Have to see how the gold goes with turquoise.
The silicone is very grippy. Almost like a suede. You could order it online at Apple and return it if you don't like it.
Actually it depends on the individual case. I had two different Apple silicone cases for my 6 and now one for my 6s Plus. The pink (coral) 6 case was rubbery and grippy, but the blue 6 case and turquoise 6s Plus case are both very slick and smooth and not grippy at all. Huge difference from individual case to case.