size(640, 360); noStroke(); background(60, 0, 0);
color inside = color(105, 55, 0); color middle = color(126, 100, 0); color outside = color(180, 150, 0);
pushMatrix(); translate(80, 80); fill(outside); rect(0, 0, 100, 200); fill(middle); rect(40, 60, 120, 120); fill(inside); rect(60, 90, 80, 80); popMatrix();
pushMatrix(); translate(360, 80); fill(inside); rect(100, 0, 100, 200); fill(outside); rect(40, 60, 120, 120); fill(middle); rect(60, 90, 80, 80); popMatrix();