Lighting has been raised to a modern art form in the past 30 years, and now chandeliers in particular can be as much as an investment as a fine painting. But savvy manufacturers have responded with a lighting-design boom that extends to even the most affordable levels. Like no other decorative element, lighting demands that you pay attention to the architectural style and period of your home, and either conform or play against them, which makes selecting lamps, sconces, chandeliers, and fixtures that much more fun.