xxxxxxxxxx
void setup(){
size(800,420); //size of mountains
}
void draw(){
background(255);
for(int i=0; i<3; i++){
for(float x=1; x<width; x++){
stroke(200-i*70); // color
line(x,height,x,height-noise(10*i+x/width)*(height-50*i));
}
}
}