int r = 1000; int b = 99; void setup() { size(500, 500); colorMode(HSB, 360, 100, 100); noStroke(); smooth(); background(0, 0, 99); } void draw() { fill(frameCount%360, 100, b); ellipse(width/2, height/2, r, r); r = r - 20; b = b -5; if (r …