I think it would be fine to change the sand color to Olive Branch. If it's too much, it might be nice to select a lighter, color and consider making the paneling area above the fireplace this color. I agree the scale of the pictures is too small. I think it would be nice to anchor the dining area with a large painting. The bigger the better to fill some wall space. Right now, the furniture seems to be arbitrarily placed throughout the room so I think you should rethink the floor plan. I would place the sofas on either side of the fireplace. I would move the tv to the small wall and hope that it sits below the wall and doesn't stick out. Right now, it's fighting the natural focal point of the fireplace. Now, the concept of Spanish/ Mediterranean. When you continue this space, think heavy, think furniture. Contrast is important in this style so consider black wrought iron details, perhaps a wrought iron chandelier for over the dining table and some sconces for the living area. It might be nice to consider tapestries for the area. When I suggested a lighter color earlier, it might be appropriate to think a tan or an orangish hue that is found throughout this style.

Lovely home. This bench by Seisenberger echoes your stairs and the Clear Square Chair by Brickell gives you the aesthetic you're looking for. Would be fun to put the bench across from the 4 chairs. I like the rug you already have, but you might want to consider a cowhide rug off to the side: http://www.archiproducts.com/en/products/janua/wooden-bench-with-back-sc02-bench-with-back_256361 http://brickellcollection.com/product/clear-square-chair/ https://decohides.com/products/real-cowhide-rug-tricolor

Your note to me said the “pedestals” are coral…as in real deal coral? Just trying to work with the pieces for you, as the pairing of the chairs and the coral shape are at odds. .Let’s say you used a fabric like this and painted the chairs either black or white, in a high gloss finish. Okay, not a bad combo, but the problem is now the chairs and table do not go in your dining room…everything would have to change…wall color, wall decor (not a huge problem there) and chandelier and a rug. Would the dining room then work with the rest of the house? IMO, the chairs are great…solid, quality and you can still paint them for your room. You can even keep the glass top, but the coral would have to go. It could be replaced with Chippendale base, in the style of this rattan one: eBay for $99.00! Ignore this one below…I can’t cut it out of post.

I would like to begin saying that I love the minimalist aesthetic you have. I’m a less is more person and I don’t like random artwork for the sake of filling walls. With that said, I’d like to see more color warmth on the walls. The buttery white is making it too stark. Have you considered painting? I would try the sectional against the buffet wall to free up the window, and add your teal accents into the window treatment. Eliminate the glass table or move it between the chairs. Add more unique floor lamp lighting near the couch. The buffet can then be moved to the kitchen wall.