Summarize:

. Paint is the most traditional way of changing a home's color, but it can also be one of the most time consuming and expensive ways. To cut down on cost, consider painting one accent wall instead of redoing the whole room.  If you don't have the time, you can consider hiring painters, though depending on where you live that can be quite expensive. Make sure you use painter's tape and cover any large furniture while you're painting. Nowadays, peel and stick wallpapers offer nearly endless options while simultaneously being relatively inexpensive and easy to apply. Consider redoing a room or, for an easier and cheaper look, consider just doing a feature wall. If you don't want to or can't permanently alter the state of your walls with paint or wallpaper, add quirky colorful touches by hanging paint chips or cardstock in interesting patterns. These easy and nearly costless decorations catch the eye and are great conversation pieces!  Keep in mind that such DIY projects, while cheap, can be very time consuming. Browse websites like Pinterest for great tips and ideas. You don't necessarily need to redo your walls in order to bring color into your home. By introducing bright throw pillows, colored area rugs, or small colorful lamps or tables, you can easily add color to a room without breaking the bank. These additions can also be done over time.
Paint your walls Add wallpaper to give a room a unique look. Use paper to add nontraditional color to your walls. Introduce small colorful items like pillows and rugs.