Betty Edwards's Color: A Comprehensive and Easy-to-Follow PDF Course on Color in Art
With the knowledge about the history of color theory and being aware of the fact that there is no such thing as the correct primary colors, artists and designers should be free to trust more their own eyes and to be open for experimentation. You will get the best results using an experimental approach to what complementary colours are working for you, what a respective theory means for you, and how you want to apply a color wheel theory.