Just wanted to comment on the color for Rosy. I have a 2012 Rav with the tan (sand ash) interior. I did not like the color match for the tan mats. It was just off-color enough to look odd. I went with the black WeatherTech digi-fit liners for the front and second row. I also got the custom fit cargo liner in black. Given the trim of the car being so dark, the black mats just look sharp. Way better than a color that just isn't a match.
The digi-fit mats have worked great for me. I drove a 2011 Rav4 for about 6 months. This car didn't have floormats, so I purchased the digi-fit mats. When pulled them out of the 2011 to place in my 2012 the fit was perfect and the carpet in the car I was returning was pristine. The mats are wonderful.
Color choice is a personal preference, but know that your gray probably won't be a perfect match for the interior carpet. Will that bother you?