Suggestions for living/dining room colors?

I just bought a townhouse. One of the things that charmed me when I first saw it was the marble fireplace with white wood border and turquoise paint above, and with taupe color on both sides (same wall as fireplace). The other walls are also taupe except for one wall of the dining room (which is open to the sunken living room) which is turquoise (like the wall above the fireplace). So much taupe in the rest of the first floor is a little dark, and the turquoise in the dining room clashes with the bluish gray tile in the kitchen. So I was wondering if it would be a good idea to paint the turquoise wall in the dining room a cranberry color and maybe one of the living room walls a creamy beige to give some relief to the mostly taupe areas. Or is this too much color for the walls? What would you suggest?