Soft golds or greens could work. Try BM's #191 Macadamia Nut or #197 American's Heartland for the golds. BM's #HC-140 Prescott Green or #443 Desert Green.

I would paint the walls above the chair rail a light tan and leave the bottom red OR I would paint the top half the lightest yellow in the chair fabric and the bottom half the darker yellow/gold.

Go with the macadamia wall color and find some soft green sheers for your windows. It will lighten up the room, but still feel traditional. And the red in the plaid will still look great on the chairs. Keep the red candles for the table. They will look even better once you change the wall color.
Side not: try a two tone wall with a darker shade of the macadamia on the bottom.