shipit.js

var presses = 0;

setColor = function(red, green, blue) {
  analogWrite(A8, red);
  analogWrite(A5, red);

  analogWrite(B4, green);
  analogWrite(A6, green);

  analogWrite(B6, blue);
  analogWrite(B5, blue);
  analogWrite(A7, blue);
  analogWrite(B1, blue);
};

clearWatch();

setWatch(function(e) {
  if(e.state) {  
    if(presses == 2) {
      presses = 0;
    } else {
      presses++;
    }

    switch(presses) {
      case 0:
        setColor(1,0,0);
        break;
      case 1:
        setColor(0,1,0);
        break;
      case 2:
        setColor(0,0,1);
        break;
      default:
        setColor(0,0,0);
    }
  }
  
  console.log("Pressed "+presses);
}, BTN, { repeat: true });