what do you use the room for? TV? or is that a screen over FP? why is the wainscoat not on the 3rd wall? picture of the other end of the room would help. take the shelf down glasses don't belong over the sofa/ other furniture?

You did a good job on your fireplace but now you need to do some things so the wall color, rug, fireplace and the furniture relate. Find some pillows with gray and tan in the pattern and/or an area rug with gray and tan. Get some side tables, lamps and a coffee table.

The wine rack above the couch doesn't make any sense and should be moved. Do you stand on the sofa to get wine? Replace it with a nice piece of colorful art and add some art above your fireplace too.

Your space is nice, it just needs some finishing touches and some personality.

Orange would look good too. You just need to remember to combine the tan and gray plus the accent color in some way in the room. It's hard for the eye to blend warm (tan) and cool (gray) unless you give it some visual cues.

Lamps can be color matched to over 100 colors. https://www.lampsplus.com/products/robust-orange-leo-table-lamp-set-of-2__1r412-8x185-9j641.html

I like d_gw's idea to bring in some wood and metal for tables to warm things up and help make the transition.

A woven wood blind would add texture and help keep the room dark for movie watching.

I would move the wine rack to a space that's easier to reach and add artwork over the sofa.

Hope this helps!

It must be a little difficult to watch movies with the screen on FP wall. Can it be moved to the sofa/wine rack wall? Then sofa where loveseat is now and add some swivel chairs. Move the wine rack down towards the end we can't see and put a console table underneath it. You need to get the seating set before you need to worry about accessories/accent color