Well, I'm a little prejudiced, as my Mother was an ardent clock collector and I inherited the bug, but clocks do make a welcome addition to any wall. Plus, they are practical. There is a tremendous selection available today, both online and offline, and you'll find many styles in whatever decor you choose. I'm particularly fond of some of the newer neon wall clocks and they certainly are eye-catchers, but I like the more traditional ones also. Clocks work particularly well as the centerpiece for a wall and you decorate around them. Whatever you choose, good luck with your decorating! Here is a link that might be useful: Unique Mantle Clocks

My advice would be to go on Houzz and start some idea books to figure what your style is . Right now all you will get is dozens of ideas that will keep you more confused than ever. We need info to help with this.

Don't have time to answer all of your questions but here's what I can suggest: 1) Lower the mantle on fireplace a little, as well as the painting in the niche. (See #2 here) Consider changing the mantle to something less rustic and paint in color A (see next suggestion) 2) Open spaces should be cohesive - which you can easily do with paint. Choose 2 colors or 2 shades of the same color and vary placement in different areas. (see #5 here) Consider adding a simple chair rail to the dining area. For example, with minimal effort, you could use color A below the chair rail in dining area, as the dominant color in window treatments fabric (I"d use draw drapes) , the back wall of niche, throw pillows, lamps ac, and maybe an area rug in living room, and in accessories (see #3 here) in living room and kitchen. I'd consider adding some of that color to kitchen also -- back of open cabinets for example, recovering bar stools and dining room chair seats to match drapery fabric and possibly slip covering one of the armchairs in the living room in a pattern that incorporates the wall colors with other colors in the space. You want to use coordinates, not just the same solid everywhere so look for different textures or patterns to add. Hope that helps. I've inclluded links to additional info about topics I mentioned that I think you'll find helpful. 3) see #2 - I'd choose lamps with either a base or shade to match color A. (See #7 here) 4) Add plants. If you aren't there often enough to take care of them, use artificial greenery.

Oh, dear, Cameron…you have too many posts going on with the same dilemma. It is just too confusing…stick to one and delete the others.