Shade matching can be difficult enough when layering ceramics, let alone when trying to match a shade on a full contour zirconia or one-body ceramic restoration. Michael Cumbie, CDT, covers a basic introduction to color theory, the history of some of GC's most popular shade guides, challenges in taking and evaluating final shade matches and physiological and environmental issues we may or may not be able to control. He offers tips on how to better use your Initial IQ Lustre Pastes Set NF for optimal results.