What’s the Point of Painting Glazes?
Each glaze tints or modifies the color of the paint beneath it. When you look at a painting, the color is mixed optically giving a deep, rich color. For example, painting a glaze of red over blue gives a richer purple than you’d get if you mixed the red and blue paint together on your palette before you applied it. To rather over-simplify the science, the purple you’re seeing is created by light bouncing back from the canvas, through the blue and then the red layer, into your eye, producing a deeper color than if it’d just bounced back from the surface of one layer of mixed paint.
