GrabBall

// http://www.thm.de/site/corporate-design/hausfarben.html
// http://www.farbtabelle.at/farben-umrechnen/
color THMGreen = color(128, 186, 36);
color THMGrey  = color(74, 92, 102);
color THMRed   = color(184, 0, 64);

float x, y;
int time;
int count = 0;

void setup() {
  size(400, 300);
  background(THMGreen);
  noStroke();
  paintNewEllipse(THMGrey);
}

void paintNewEllipse(color c) {
  x = random(0+20, 400-20); // changes global var x
  y = random(0+20, 300-20); // changes global var y
  fill(c);
  ellipse(x, y, 40, 40);
}

void draw() {
  if (count == 0) {
    time = millis();
    // fill(THMGreen);
    // text((20000+time-millis())/1000.0, 10, 15);
  } else {
    fill(THMGreen);
    rect(0, 0, 60, 20);
    fill(THMGrey);
    text((20000+time-millis())/1000.0, 10, 15);
  }
  if (get(mouseX, mouseY) == THMGrey) { // oder pixels[]
    fill(THMRed);
    ellipse(x, y, 40, 40);
    paintNewEllipse(THMGrey);
    count++;
  }
}