Colors choices for your room walls should be appropriate.  They should excel in taste and blend into existing furniture.  One should spend some time, think what kind of décor one would like, and accordingly select one. The colors have to be matched with your other furnishings such as curtains, table cloths etc. and look elegant and effuse an air of sophistication. How to select?

Tips for Selecting Wall Colors

• Take your time in selecting.  Purchase colors after you have purchased other furnishings and fittings, such as draperies, rugs etc
• It should be the easiest to change
• Should not be very expensive. It should be within your budget limits
• One should take samples of  other furnishings while shopping for colors.  The colors should match well
• Look and observe the colors well so that your get what you want. One should not go in for less darker shade or more.  It should be a perfect choice
• If draperies or other fabrics are print, then the wall colors should match the backdrop color of the furnishings
• Select a shade of white or off-white for the moldings, doors, and windows or consider the palest shade of color to coordinate with the walls
• Go in for the right paint finishes that which is best for your project. Matte or flat finishes hide wall imperfections, while glossier finishes will reflect more light.
• Different rooms can have colors suitable to their purpose

Paint the walls of your house appropriately keeping in tune with your theme and likes and dislikes.  It should gel well with other furnishings.  Spend sufficient time on it.  It should not be a shoddy affair. Go in for the best.