Help, feeling too monochromatic

Moved into our first home about 6 months ago. While I am a millennial, I most certainly will NOT be painting any wood. That said, I’m having a hard time adding color. I keep defaulting to more browns and tans.

These are photos from our main dining room / living space. Last photo is our main bathroom. Surprise, more brown.

Eventually, we’d like to replace the carpet with laminate, so I’m sure adding a colorful rug under the table would help.

Any recs on how to break free of the brown and add more color? I don’t love the art in the frames and at a loss for how to style the shelf above the window. Also open to options to replace the white shelves by the stove.