The gray one doesn't go with all the warmer tones you have in the home. Introducing gray into this space isn't the smartest (or easiest) choice.

A beige/cream colored rug would go more with your current furniture.

The gray does not work, I would start by painting the walls anything but beige , a soft gray green would be nice then look for a rug something like this that has a bit of gray and the wall color, then some pillows with touch of gray the green and another color like yellow.