Let's face it: Kitchens are expensive, and most people can afford only one kitchen renovation in a lifetime. It's up to us as contractors to guide the homeowner in making the most of his investment. But one subject that's often overlooked in kitchen remodeling is lighting. Too often the choice and placement of light fixtures is based upon what happened to be on sale that week at the local home center. A well-lit kitchen, on the other hand, provides adequate illumination to the general kitchen area and to specific work, or task, areas and renders the colors of the kitchen's components accurately. Lighting can be a complex subject, replete with mathematical formulas and unfamiliar words. And there are many variables