Kevin D. MacPherson's book Fill Your Paintings with Light and Color
This book was an impulse purchase. And a book that I can recommend. It's a condensed version of Mitch Albala's type of book. Lot of examples and easy to read. It's out of date camera-wise, i.e., pre-digital. Nonetheless, it is a good book to have in the library, if only to be familiar with Kevin's work and teaching style.