Simple random and Color() example

mySketch
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//int numCircs = 10;
​
float circX;
float circY;
float circD;
​
color circColor;
​
​
void setup() {
  size(500, 800);
  
  // sets up x and y location of 1 circle at a random location
  circX = random(width);
  circY = random(height);
  // gives the circle a random size
  circD = random(10, 200);
  
  // gives the circle a random color, random r, g and B value
  circColor = color( random(255), random(255), random(255));
}
​
void draw() {
  background(#09366C);
  
  
  // Draws circles at a random location and gives it a random color value using color()
  if (dist(mouseX, mouseY, circX, circY) < circD*.5) {    // checking if the mouse is in every new circle
    fill(circColor);   // changes color to a random one
  } else {
    fill(255);    // or else it's white
  }
  ellipse(circX, circY, circD, circD);    // drawing the circle
}
​
// on pressing R resets and draws a new circle 
void keyPressed() {
  if (key == 'r') {
    circX = random(width);
    circY = random(height);
    circD = random(300);
    circColor = color( random(255), random(255), random(255));
  }
}
​
​
​