Paint
Paint is the fastest and cheapest design tool. It is inexpensive, easy to apply and comes in thousands of colors. Here are some practical tips for decorating with paint:
    Wall color should be compatible with your furniture. And it must work with other built-in features such as bookshelves and fireplaces.
    If you have a busy or vibrant color scheme for your carpet, a neutral-colored wall may be the best choice.
    If you have two rooms connected by a wide doorway, make sure their wall colors don't clash.
    Warm hues and high-intensity colors make a room seem smaller. Cool hues open it up.
    Add interest to a room by varying the wall colors. Or paint the ceiling a different color than the walls.
    Go beyond the roller! Experiment with paint techniques such as sponging, marbleizing, glazing, ragging, stenciling, stippling and color washing.