// Example 03-17 from "Getting Started with Processing" 
// by Reas & Fry. O'Reilly / Make 2010

size(480, 120);
noStroke();
smooth();
background(204, 226, 225);    // Light blue color
fill(255, 0, 0, 160);         // Red color
ellipse(132, 82, 200, 200);   // Red circle
fill(0, 255, 0, 160);         // Green color
ellipse(228, -16, 200, 200);  // Green circle
fill(0, 0, 255, 160);         // Blue color
ellipse(268, 118, 200, 200);  // Blue circle