I think you feel it looks too solid is because you haven’t followed through with the rest of the room, for example cushions to tie in with it. Further up these comments minnie101 has suggested some black patterned cushions which i think would lift the scheme, however if you really don’t like it then follow your heart and return it. Why keep something you don’t like? Then choose a colour-way that you prefer, such as the blue you suggested. A blue coastal theme would tie in nicely with the neutral theme you have at the moment. By the way, i got a Turkish rug from Olney Carpets in Bucks, and they let us take it home for a week to see if we liked it before buying! True service, and yes we did buy it! Of course buying online does give you that option too. I wish you lots of luck.

Presuming you are keeping the colour scheme the same anything from a Black, Slate or Silver Plush at the top end to more affordable Santa Cruz Boardwalk if you want more than one colour and more affordable.

Not sure why this is showing up in the UK?

Room plan and photo's definitely. If the fireplace is in the middle, then that's the focal point, so maybe the sofa could go opposite ( or is the door in the way? )