Color-mass painting is the exact opposite of drawing. Just because artists use brushes, doesn't mean that they're painting. However, when scrubbing with a brush, from the center moving out, an edge can be created by juxtaposing one color spot next to another.
(detail © 2000 C.Berk)
Placing a light against a dark, a cool against a warm, vague next to defined, a contour will emerge.
Without filling in between lines, colors truly interact and the paint develops a visual life of its own...breathing undulating until each color functions to the individual artist's temperament.
Please leave your comments, questions, etc. below. (More artwork, by theme, will be posted soon.)