and centerpiece options...

Where did you get the chair fabric? Many times the fabric stores have coordinating fabric lined up together. Then, just sew a simple rectangle for your custom table runner.

The white paint on the chairs seems a bit too perfect IMO. I would either sand and distress them or drybrush taupe over the white so it works better with the fabric and table.

Consider a table runner in stripes to coordinate with the fabric on the chairs.

You could also use same fabric for table runner. Look for 3 glass vases, jugs and use as center piece in colors of fabric. You would not even need table runner.

[https://www.houzz.com/photos/san-anselmo-transitional-dining-room-san-francisco-phvw-vp~7551218[(https://www.houzz.com/photos/san-anselmo-transitional-dining-room-san-francisco-phvw-vp~7551218)