Created using Sketch2Tweet tool

Sketch code

int s=600;
int x, y;
int[] z= {
  -4, 4
};
void setup() {
  size(s, s);
  colorMode(HSB,255);
  background(0);
}
void draw() {
  x+=8;
  if (x>s) {
    x=0;
    y+=8;
  }
  stroke(randomColor());
  strokeWeight(random(1,3));
  line(x, y+z[mouseY%2], x+8, y+z[int(random(2))]);
}


color randomColor(){
   return color(int(random(255)), 255,255);
}

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