Drawing on tinted paper

Artists sometimes choose to draw or paint on tinted support, (paper, canvas, or other surfaces). This may be to add a certain mood or even drama to the drawing/painting that would otherwise be absent, and/or to allow for laying in highlights with white or other light-colored pigments (yellow, etc.) to create a more robust three-dimensional appearance to the flat images. Artists can also entirely cover the colored support with pigment; the underlying color tone of the paper/canvas may show through or interact with the applied colors, creating an optical mix that results in a richer "mood" or color tone to the finished picture that would be difficult or impossible to achieve otherwise. In my case, in these (and a few other drawings) I wanted to get away from the familiar sameness of drawing on white paper, to experiment with creating a more rounded three-dimensional effect adding dark and light tones to the "mid-tone" of the colored paper. In short, these were exercises. I'm happy with these two drawings, but in the short time I had to work on each drawing, (approx. 2.5 hours each), I could not go as far with the dark/mid-tone/high-light dimensional effects as I might have otherwise.