float rd = 25;     //value for red
float gr = 50;     //value for green
float bl = 255;    //value for blue

void setup() {
  size(600,600);
  background(230);
  noLoop();

}

void draw() {
  float rL = random(0, 200);
  float rS = random(10);


  noStroke();
  rect (0,0, width, height);
  fill(230, 230, 230, 1);
  stroke(rd, gr, bl, rS);
  //  stroke(rC, 0, rC2, rS);
  strokeWeight(rS);
  //  line(pmouseX,pmouseY,mouseX,mouseY);
  line(width/2,height/2,mouseX,mouseY);
  line(width/2,height/2,mouseX-rL,mouseY-rL);
}

void mousePressed() {

  if( mouseButton == LEFT){
    rd= random(100, 255);
    gr= random(100, 255);
    //   bl= random(100, 255);
  }

  if (mouseButton == RIGHT) {
    noLoop();
  } 
  else  {
    loop();
  } 
}