Tip #1. Choose a color scheme from the largest pattern in the space.
If you've got patterned upholstery, an Oriental rug or large piece of artwork, pluck colors you like from the pattern. For a neutral wall paint color, look to the pattern's whites and beiges.
Tip #2. Start with the formal areas of the house.
Specifically, the living room, dining room and entry way. Choose a color scheme for those areas first, then pull one color from the scheme. For example, take the red sofa and tone it down (say, to burgundy) for an accent in more private spaces such as the den, office or bedroom.