House owners have a luxury to choose different colors for every single room. Or even more than one color per room, if you are creative.
Your home is not a museum. So, don’t be afraid to experiment with mixing and matching colors. You probably had no idea how completely different tones can look amazing together. You might want to try and play with tools like Colorhunter or Colourlovers to get inspired.
These, and similar to them, palettes can also help you figure out how you can brighten up your interior design, make dark things lighter, and points accents to what is important to you. Aside of wall there are many things that contribute a lot to your general color theme: pillows, curtains, area rugs, live and fake flowers, decorative glass, seasonal/holiday decorations.
The most important thing to remember is that the right colors are the colors that fit you and your family. And who cares if they look completely absurd to others. That’s your home!